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A136788 Triangle read by rows: A000012 * A107131. 2
1, 1, 1, 1, 2, 1, 1, 2, 4, 1, 1, 2, 6, 7, 1, 1, 2, 6, 17, 11, 1, 1, 2, 6, 22, 41, 16, 1, 1, 2, 6, 22, 76, 86, 22, 1, 1, 2, 6, 22, 90, 226, 162, 29, 1, 1, 2, 6, 22, 90, 352, 582, 281, 37, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Row sums = A086615: (1, 2, 4, 8, 17, 38,...). A136787 = A107131 * A000012

LINKS

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

FORMULA

A000012 * A107131 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 2, 1;

1, 2, 4, 1;

1, 2, 6, 7, 1;

1, 2, 6, 17, 11, 1;

1, 2, 6, 22, 41, 16, 1;

1, 2, 6, 22, 76, 86, 22, 1;

...

CROSSREFS

Cf. A086615, A136787.

Sequence in context: A113143 A181802 A110971 * A136450 A131054 A267998

Adjacent sequences:  A136785 A136786 A136787 * A136789 A136790 A136791

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jan 21 2008

STATUS

approved

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Last modified October 16 12:35 EDT 2018. Contains 316263 sequences. (Running on oeis4.)