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A136536 A001263 * A128064 * A000012 as infinite lower triangular matrices. 2
1, 2, 2, 5, 7, 3, 14, 19, 19, 4, 42, 51, 71, 41, 5, 132, 146, 216, 216, 76, 6, 429, 449, 617, 827, 547, 127, 7, 1430, 1457, 1793, 2675, 2675, 1205, 197, 8, 4862, 4897, 5497, 8017, 10369, 7429, 2389, 289, 9, 46796, 16840, 17830, 23770, 34858, 34858, 18226, 4366 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A001791: (1, 4, 15, 56, 210, 792,...). Left column = A000108 starting (1, 2, 5, 14, 42, 132, 429,...).

LINKS

Table of n, a(n) for n=1..53.

EXAMPLE

First few rows of the triangle are:

1;

2, 2;

5, 7, 3;

14, 19, 19, 4;

42, 51, 71, 41, 5;

132, 146, 216, 216, 76, 6;

429, 449, 617, 827, 547, 127, 7;

...

CROSSREFS

Cf. A128064, A001263, A001791, A000108.

Sequence in context: A120843 A205674 A021447 * A023507 A095674 A207981

Adjacent sequences:  A136533 A136534 A136535 * A136537 A136538 A136539

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jan 04 2008

STATUS

approved

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Last modified October 19 13:38 EDT 2018. Contains 316361 sequences. (Running on oeis4.)