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A130585 A054522 * A007318. 4
1, 2, 1, 3, 4, 2, 4, 7, 6, 2, 5, 16, 24, 16, 4, 6, 15, 22, 20, 10, 2, 7, 36, 90, 120, 90, 36, 6, 8, 35, 90, 142, 140, 84, 28, 4, 9, 52, 170, 336, 420, 336, 168, 48, 6, 10, 53, 168, 352, 508, 504, 336, 144, 36, 4 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

A130584 = A007318 * A054522 Row sums = A130586: (1, 3, 9, 19, 65, 75, 385,...).

LINKS

Table of n, a(n) for n=0..54.

FORMULA

A054522 * A007318 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 4, 2;

4, 7, 6, 2;

5, 16, 24, 16, 4;

6, 15, 22, 20, 10, 2;

7, 36, 90, 120, 90, 36, 6;

...

CROSSREFS

Cf. A054522, A007318, A130585, A130586.

Sequence in context: A140073 A131389 A131394 * A209151 A125100 A128544

Adjacent sequences:  A130582 A130583 A130584 * A130586 A130587 A130588

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jun 06 2007

STATUS

approved

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Last modified August 22 12:34 EDT 2019. Contains 326177 sequences. (Running on oeis4.)