Triangular Numbers: Cycle Graphs: 3-cycle: 0, 6, 15 4-cycle: 0, 1, 9, 6 5-cycle: 0, 0, 1, 9, 6 6-cycle: 0, 0, 1, 9, 12, 3 7-cycle: 0, 0, 1, 2, 4, 11, 10 8-cycle: 0, 0, 1, 14, 14, 7, 3, 3 9-cycle: 0, 0, 1, 5, 5, 10, 18, 18, 3 Grid Graphs 2x2 grid: Row 1: 0, 1 Row 2: 6, 9 3x2 grid: Row 1: 1, 0, 3 Row 2: 5, 10, 18 3x3 grid: Row 1: 12, 3, 18 Row 2: 66, 0, 10 Row 3: 54, 1, 35 4x2 grid: Row 1: 1, 0, 0, 3 Row 2: 5, 10, 45, 33 4x3 grid: Row 1: 0, 1, 135, 55 Row 2: 6, 9, 36, 0 Row 3: 22, 69, 84, 21 4x4 grid: Row 1: 3, 0, 0, 36 Row 2: 63, 15, 105, 195 Row 3: 147, 6, 85, 240 Row 4: 24, 4, 51, 225