A131054 Triangle read by rows: A000012 * A119467 as infinite lower triangular matrices.

1, 1, 1, 2, 1, 1, 2, 4, 1, 1, 3, 4, 7, 1, 1, 3, 9, 7, 11, 1, 1, 4, 9, 22, 11, 16, 1, 1, 4, 16, 22, 46, 16, 22, 1, 1, 5, 16, 50, 46, 86, 22, 29, 1, 1, 5, 25, 50, 130, 86, 148, 29, 37, 1, 1, 6, 25, 95, 130, 296, 148, 239, 37, 46, 1, 1

Offset

0,4

Comments

Row sums = 2^n.

Links

Table of n, a(n) for n=0..65.

Example

First few rows of the triangle are:
1;
1, 1;
2, 1, 1;
2, 4, 1, 1;
3, 4, 7, 1, 1;
3, 9, 7, 11, 1, 1;
4, 9, 22, 11, 16, 1, 1;
4, 16, 22, 46, 16, 22, 1, 1;
...

Crossrefs

Cf. A000012, A119467.

Sequence in context: A334622 A136450 A355011 * A267998 A265005 A166288

Adjacent sequences: A131051 A131052 A131053 * A131055 A131056 A131057

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 12 2007

Extensions

a(46) = 5 inserted and more terms from Georg Fischer, May 29 2023

Status

approved