A382758 Number of edges of the graph encoded by A382754(n).

0, 0, 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, 3, 2, 3, 4, 4, 5, 6, 0, 1, 2, 3, 4, 3, 2, 3, 4, 3, 4, 5, 4, 5, 4, 5, 5, 6, 6, 7, 6, 4, 5, 6, 7, 6, 5, 6, 7, 7, 8, 8, 9, 10, 0, 1, 2, 3, 4, 5, 3, 2, 3, 4, 3, 4, 5, 4, 5, 6, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 6, 7, 6, 7, 6, 7, 7, 8

Offset: 0

Author

Pontus von Brömssen, Apr 04 2025

Keywords

• nonn
• tabf

Examples

			As an irregular triangle, where row n >= 0 contains A000088(n) terms:
  0;
  0;
  0, 1;
  0, 1, 2, 3;
  0, 1, 2, 3, 3, 2, 3, 4, 4, 5, 6;
  ...
		

Crossrefs

Cf. A000088, A000120, A382191, A382754.

Formula

a(n) = A000120(A382754(n))-1 for n >= 1.