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A134510 A112552 * A128174. 2
1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 8, 5, 5, 1, 1, 12, 12, 6, 6, 1, 1, 21, 17, 17, 7, 7, 1, 1, 33, 33, 23, 23, 8, 8, 1, 1, 55, 50, 50, 30, 30, 9, 9, 1, 1, 88, 88, 73, 73, 38, 38, 10, 10, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row sums = the nonzero terms of A001629: (1, 2, 5, 10, 20, 38, 71,...) such that A001629(n+1) = row sums of triangle A134510.

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A112552 * A128174 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

3, 1, 1;

4, 4, 1, 1;

8, 5, 5, 1, 1;

12, 12, 6, 6, 1, 1;

21, 17, 17, 7, 7, 1, 1;

33, 33, 23, 23, 8, 8, 1, 1;

55, 50, 50, 30, 30, 9, 9, 1, 1;

...

CROSSREFS

Cf. A112552, A128174, A001629.

Sequence in context: A180979 A102716 A173076 * A335322 A171145 A271644

Adjacent sequences:  A134507 A134508 A134509 * A134511 A134512 A134513

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Oct 28 2007

STATUS

approved

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Last modified April 21 15:39 EDT 2021. Contains 343154 sequences. (Running on oeis4.)