A131345 Triangle read by rows: A065941 * A046854 as infinite lower triangular matrices.

1, 2, 1, 3, 2, 1, 5, 5, 3, 1, 8, 10, 8, 3, 1, 13, 20, 19, 10, 4, 1, 21, 38, 42, 26, 14, 4, 1, 34, 71, 89, 65, 41, 16, 5, 1, 55, 130, 182, 151, 110, 50, 21, 5, 1, 89, 235, 363, 338, 276, 146, 72, 23, 6, 1, 144, 420, 709, 730, 659, 392, 223, 83, 29, 6, 1

Offset

0,2

Comments

Left border = Fibonacci numbers starting with F(2). Row sums = A131244: (1, 3, 6, 14, 30, 67, 146,...). A131344 = A046854 * A065941.

Links

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

Formula

A065941 * A046854 as infinite lower triangular matrics.

Example

First few rows of the triangle are:
1;
2, 1;
3, 2, 1;
5, 5, 3, 1;
8, 10, 8, 3, 1;
13, 20, 19, 10, 4, 1;
21, 38, 42, 26, 14, 4, 1;
...

Crossrefs

Cf. A046854, A065941, A131244, A131344.

Sequence in context: A131245 A179927 A104446 * A134423 A061260 A152097

Adjacent sequences: A131342 A131343 A131344 * A131346 A131347 A131348

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 30 2007

Extensions

a(49) split and more terms from Georg Fischer, May 29 2023

Status

approved