The following pictures show n unit pentagons packed inside the smallest known domino (with short side s).
1. 
s = 1.53884+
Trivial.
2. 
s = 1.55460+
Found by Jonathan Viquerat
in May 2026.
3. 
s = 2.10051+
Found by Jonathan Viquerat
in May 2026.
4. 
s = 2.33739+
Found by Jonathan Viquerat
in May 2026.
5. 
s = 2.47315+
Found by Jonathan Viquerat
in May 2026.
6. 
s = 2.69228+
Found by Jonathan Viquerat
in May 2026.
7. 
s = 2.91977+
Found by Jonathan Viquerat
in May 2026.
8. 
s = 3.07687+
Found by Joshua Wolk
in September 2026.
9. 
s = 3.33455+
Found by Ryan Chi and d/dx
in September 2026.
10. 
s = 3.51930+
Found by Bhavithran Ananthan
in July 2026.
11. 
s = 3.61313+
Found by Jonathan Viquerat
in May 2026.
12. 
s = 3.74837+
Found by Jonathan Viquerat
in May 2026.
13. 
s = 3.88151+
Found by Bhavithran Ananthan
in July 2026.
14. 
s = 3.92745+
Found by Aapo Lipponen
in October 2026.
15. 
s = 4.11722+
Found by Joshua Wolk
in September 2026.
16. 
s = 4.27934+
Found by Jonathan Viquerat
in May 2026.
17. 
s = 4.38232+
Found by Aapo Lipponen
in October 2026.
18. 
s = 4.54031+
Found by Aapo Lipponen
in October 2026.
19. 
s = 4.67463+
Found by Joshua Wolk
in September 2026.
20. 
s = 4.79125+
Found by Thomas Greenleaf
in June 2026.
21. 
s = 4.87601+
Found by Jonathan Viquerat
in September 2026.
22. 
s = 4.93220+
Found by Thomas Greenleaf
in June 2026.
23. 
s = 5.01784+
Found by Yanis Gomes
in October 2026.
24. 
s = 5.07776+
Found by Joshua Wolk
in September 2026.
25. 
s = 5.22619+
Found by Joshua Wolk
in September 2026.
26. 
s = 5.29795+
Found by Joshua Wolk
in September 2026.
27. 
s = 5.44567+
Found by Yanis Gomes
in October 2026.
28. 
s = 5.51445+
Found by Joshua Wolk
in September 2026.
29. 
s = 5.65349+
Found by Joshua Wolk
in September 2026.
30. 
s = 5.73945+
Found by Joshua Wolk
in September 2026.
31. 
s = 5.86943+
Found by Joshua Wolk
in September 2026.
32. 
s = 5.94115+
Found by Joshua Wolk
in September 2026.
33. 
s = 6.04133+
Found by Joshua Wolk
in September 2026.
34. 
s = 6.11919+
Found by Joshua Wolk
in September 2026.
35. 
s = 6.16793+
Found by Joshua Wolk
in September 2026.
36. 
s = 6.24976+
Found by Joshua Wolk
in September 2026.
37. 
s = 6.28763+
Found by Yanis Gomes
in October 2026.
38. 
s = 6.33603+
Found by Joshua Wolk
in September 2026.
39. 
s = 6.43246+
Found by Joshua Wolk
in September 2026.
40. 
s = 6.47982+
Found by Joshua Wolk
in September 2026.
41. 
s = 6.61003+
Found by Joshua Wolk
in September 2026.
42. 
s = 6.67318+
Found by Yanis Gomes
in October 2026.
43. 
s = 6.73358+
Found by Joshua Wolk
in September 2026.
44. 
s = 6.84651+
Found by Joshua Wolk
in September 2026.
45. 
s = 6.91735+
Found by Joshua Wolk
in September 2026.
46. 
s = 7.02518+
Found by Joshua Wolk
in September 2026.
47. 
s = 7.09863+
Found by Joshua Wolk
in September 2026.
48. 
s = 7.16702+
Found by Joshua Wolk
in September 2026.
49. 
s = 7.28200+
Found by Joshua Wolk
in September 2026.
50. 
s = 7.35018+
Found by Joshua Wolk
in September 2026.