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A133341 A007318 * A134312. 0
1, 2, 1, 3, 3, 2, 4, 6, 8, 4, 5, 10, 20, 20, 8, 6, 15, 40, 60, 48, 16, 7, 21, 70, 140, 168, 112, 32, 8, 28, 112, 280, 448, 448, 256, 64, 9, 36, 168, 504, 1008, 1344, 1152, 576, 128, 10, 45, 240, 840, 2016, 3360, 3840, 2880, 1280, 256 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A047926: (1, 3, 8, 22, 63, 185,...).

LINKS

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

FORMULA

Binomial transform of A134312, as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 3, 2;

4, 6, 8, 4;

5, 10, 20, 20, 8;

6, 15, 40, 60, 48, 16;

7, 21, 70, 140, 168, 112, 32;

...

3, 3, 3,

CROSSREFS

Cf. A134312, A047926.

Sequence in context: A324751 A210595 A094435 * A111492 A319254 A210864

Adjacent sequences:  A133338 A133339 A133340 * A133342 A133343 A133344

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Oct 19 2007

STATUS

approved

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Last modified October 17 19:44 EDT 2019. Contains 328128 sequences. (Running on oeis4.)