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A132776 A128064(unsigned) * A007318. 2
1, 3, 2, 5, 8, 3, 7, 18, 15, 4, 9, 32, 42, 24, 5, 11, 50, 90, 80, 35, 6, 13, 72, 165, 200, 135, 48, 7, 15, 98, 273, 420, 385, 210, 63, 8, 17, 128, 420, 784, 910, 672, 308, 80, 9, 19, 162, 612, 1344, 1890, 1764, 1092, 432, 99, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A053220: (1, 5, 16, 44, 112, 272,...). A003506 = A007318 * A128064(unsigned).

LINKS

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

FORMULA

A128064(unsigned) * A007318 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

3, 2;

5, 8, 3;

7, 18, 15, 4;

9, 32, 42, 24, 5;

11, 50, 90, 80, 35, 6;

...

CROSSREFS

Cf. A128064, A053220, A003506.

Sequence in context: A195628 A124422 A223544 * A249741 A246275 A209757

Adjacent sequences:  A132773 A132774 A132775 * A132777 A132778 A132779

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 29 2007

STATUS

approved

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Last modified January 21 04:53 EST 2020. Contains 331104 sequences. (Running on oeis4.)