A127375 Triangle A126988 * A054521, as infinite lower triangular matrices.

1, 3, 0, 4, 1, 0, 7, 0, 1, 0, 6, 1, 1, 1, 0, 12, 2, 0, 0, 1, 0, 8, 1, 1, 1, 1, 1, 0, 15, 0, 3, 0, 1, 0, 1, 0, 13, 4, 0, 1, 1, 0, 1, 1, 0, 18, 2, 3, 2, 0, 0, 1, 0, 1, 0, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 28, 4, 3, 0, 3, 0, 1, 0, 0, 0, 1, 0, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0

Offset: 1

Author

Gary W. Adamson, Jan 12 2007

Keywords

• nonn
• tabl

Comments

Left column gives A000203.

Row sums give A018804.

Examples

			First few rows of the triangle are:
1;
3, 0;
4, 1, 0;
7, 0, 1, 0;
6, 1, 1, 1, 0;
12, 2, 0, 0, 1, 0;
8, 1, 1, 1, 1, 1, 0;
...
		

Crossrefs

Cf. A000203, A018804, A054521, A126988.

Extensions

a(17) = 2 inserted and more terms from Georg Fischer, May 29 2023