Triangles in Dominoes

The following pictures show n unit equilateral triangles packed inside the smallest known domino (of shortest side length s).


1-2.

s = √3/2
Trivial.
 
           3.

s = .96796+
Found by Jonathan Viquerat
in April 2026.
           4.

s = 1.12036+
Found by Jonathan Viquerat
in April 2026.


5.

s = 1.26315+
Found by Jonathan Viquerat
in April 2026.
           6.

s = 1.37629+
Found by Jonathan Viquerat
in April 2026.
           7.

s = 1.49076+
Found by Jonathan Viquerat
in April 2026.

8.

s = 1.56293+
Found by Jonathan Viquerat
in April 2026.
           9.

s = 1.64882+
Found by Bhavithran Ananthan
in July 2026.
           10.

s = 1.68302+
Found by Aapo Lipponen
in July 2026.

11.

s = 1.72969+
Found by Joshua Wolk
in September 2026.
           12.

s = 1.74022+
Found by Jonathan Viquerat
in September 2026.
           13.

s = 1.85319+
Found by Jonathan Viquerat
in April 2026.

14.

s = 3(3–√3)/2 = 1.90192+
Found by Jonathan Viquerat
in April 2026.
           15.

s = 1.97875+
Found by Joshua Wolk
in September 2026.
           16.

s = 2
Found by Jonathan Viquerat
in April 2026.

17.

s = 2.10306+
Found by Jonathan Viquerat
in April 2026.
           18.

s = 2.14913+
Found by Jonathan Viquerat
in April 2026.
           19.

s = 2.24321+
Found by Thomas Schadt
in September 2026.

20.

s = 2.29729+
Found by Aapo Lipponen
in July 2026.
           21.

s = 2.36065+
Found by Thomas Schadt
in September 2026.
           22.

s = 2.40089+
Found by Joshua Wolk
in September 2026.

23.

s = 2.45223+
Found by Joshua Wolk
in September 2026.
           24.

s = 2.47803+
Found by Joshua Wolk
in September 2026.
           25.

s = 2.51458+
Found by Joshua Wolk
in September 2026.

26.

s = 2.54759+
Found by Thomas Schadt
in September 2026.
           28.

s = 2.56837+
Found by Thomas Schadt
in September 2026.
           28.

s = 2.59434+
Found by Thomas Schadt
in September 2026.

29.

s = 2.64841+
Found by Thomas Schadt
in September 2026.
           30.

s = 2.69222+
Found by Thomas Schadt
in September 2026.
           31.

s = 2.72708+
Found by Thomas Schadt
in September 2026.

32.

s = 2.77024+
Found by Thomas Schadt
in September 2026.
           33.

s = 2.84139+
Found by Thomas Schadt
in September 2026.
           34.

s = 2.87515+
Found by Thomas Schadt
in September 2026.

35.

s = 2.91827+
Found by Thomas Schadt
in September 2026.
           36.

s = 2.96585+
Found by Thomas Schadt
in September 2026.
           37.

s = 3.00891+
Found by Thomas Schadt
in September 2026.

38.

s = 3.05515+
Found by Thomas Schadt
in September 2026.
           39.

s = 3.10039+
Found by Thomas Schadt
in September 2026.
           40.

s = 3.13895+
Found by Thomas Schadt
in September 2026.

41.

s = 3.17722+
Found by Thomas Schadt
in September 2026.
           42.

s = 3.21847+
Found by Thomas Schadt
in September 2026.
           43.

s = 3.25011+
Found by Thomas Schadt
in September 2026.

44.

s = 3.28461+
Found by Thomas Schadt
in September 2026.
           45.

s = 3.31131+
Found by Thomas Schadt
in September 2026.
           46.

s = 3.33134+
Found by Thomas Schadt
in September 2026.

47.

s = 3.36472+
Found by Thomas Schadt
in September 2026.
           48.

s = 3.38757+
Found by Thomas Schadt
in September 2026.
           49.

s = 3.41214+
Found by Thomas Schadt
in September 2026.

50.

s = 3.43805+
Found by Thomas Schadt
in September 2026.