A132476 A007318^(-1) * [3*A007318^2 - 2*A000012].

1, 3, 1, 3, 8, 1, 3, 7, 13, 1, 3, 14, 12, 18, 1, 3, 13, 38, 18, 23, 1, 3, 20, 35, 80, 25, 28, 1, 3, 19, 75, 75, 145, 33, 33, 1, 3, 26, 70, 210, 140, 238, 42, 38, 1, 3, 25, 124, 196, 490, 238, 364, 52, 43, 1

Offset: 0

Author

Gary W. Adamson, Aug 22 2007

Keywords

• nonn
• tabl

Comments

Row sums = A132477: (1, 4, 12, 24, 48, 96, 192, ...).

Examples

			First few rows of the triangle:
  1;
  3,  1;
  3,  8,  1;
  3,  7, 13,  1;
  3, 14, 12, 18,  1;
  3, 13, 38, 18, 23,  1;
  3, 20, 35, 80, 25, 28,  1;
  ...
		

Crossrefs

Cf. A007318, A000012, A132477.

Formula

Inverse binomial transform of [3*A007318 - 2*A000012], as infinite lower triangular matrices.