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A131415 (A007318 * A000012) + (A000012 * A007318) - A007318. 0
1, 3, 1, 6, 4, 1, 11, 10, 5, 1, 20, 21, 15, 6, 1, 37, 41, 36, 21, 7, 1, 70, 78, 77, 57, 28, 8, 1, 135, 148, 155, 134, 85, 36, 9, 1, 264, 283, 303, 289, 219, 121, 45, 10, 1, 521, 547, 586, 592, 508, 340, 166, 55, 11, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Left column = A006127: (1, 3, 6, 11, 20, 37,...). Row sums = A047859: (1, 4, 11, 27, 63,...).

LINKS

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

FORMULA

(A007318 * A000012) + (A000012 * A007318) - A007318 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

3, 1;

6, 4, 1;

11, 10, 5, 1;

20, 21, 15, 6, 1;

37, 41, 36, 21, 7, 1;

...

CROSSREFS

Cf. A007318, A000012, A006127, A047859.

Sequence in context: A255874 A108286 A185944 * A210230 A207615 A209165

Adjacent sequences:  A131412 A131413 A131414 * A131416 A131417 A131418

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jul 08 2007

STATUS

approved

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Last modified September 21 23:10 EDT 2020. Contains 337274 sequences. (Running on oeis4.)