A129239 Triangle read by rows: A054521 * A129234 as infinite lower triangular matrices.

1, 1, 0, 3, 2, 0, 4, 0, 3, 0, 10, 5, 3, 4, 0, 6, 0, 0, 0, 5, 0, 21, 9, 7, 4, 5, 6, 0, 16, 0, 3, 0, 5, 0, 7, 0, 27, 10, 0, 9, 5, 0, 7, 8, 0, 20, 0, 8, 0, 0, 0, 7, 0, 9, 0, 55, 20, 12, 9, 11, 6, 7, 8, 9, 10, 0, 24, 0, 0, 0, 5, 0, 7, 0, 0, 0, 11, 0, 78, 27, 18, 15, 11, 13, 7, 8, 9, 10, 11, 12, 0

Offset: 1

Author

Gary W. Adamson, Apr 05 2007

Keywords

• nonn
• tabl

Comments

Left column = A023896: (1, 1, 3, 4, 10, 6, 21, ...).

Examples

			First few rows of the triangle:
   1;
   1, 0;
   3, 2, 0;
   4, 0, 3, 0;
  10, 5, 3, 4, 0;
   6, 0, 0, 0, 5, 0;
  21, 9, 7, 4, 5, 6, 0;
  16, 0, 3, 0, 5, 0, 7, 0;
  ...
		

Crossrefs

Cf. A023896, A054521, A129234.

Extensions

a(21) = 0 inserted and more terms from Georg Fischer, May 29 2023