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

1,2

Comments

Left column gives A000203.

Row sums give A018804.

Links

Table of n, a(n) for n=1..91.

Example

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.

Sequence in context: A308216 A035544 A129718 * A238573 A346965 A325491

Adjacent sequences: A127372 A127373 A127374 * A127376 A127377 A127378

Keyword

nonn,tabl

Author

Gary W. Adamson, Jan 12 2007

Extensions

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

Status

approved