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A136789 Triangle read by rows: A007318^(-1) * A011971. 2
1, 0, 2, 1, -1, 5, 1, 4, -5, 15, 4, 2, 17, -23, 52, 11, 17, 2, 79, -109, 203, 41, 46, 80, -20, 397, -544, 877, 162, 198, 208, 418, -244, 2134, -2876, 4140, 715, 841, 1031, 994, 2389, -2053, 12196, -16113, 21147, 3425, 4014, 4663, 5771, 4950, 14693, -15859, 73798, -95495, 115975 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row sums and right border = the Bell numbers (A000110) starting (1, 2, 5, 15, 52, 203,...).

LINKS

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

FORMULA

Binomial transform of the Aitken array A011971.

EXAMPLE

First few rows of the triangle are:

1;

0, 2;

1, -1, 5;

1, 4, -5, 15;

4, 2, 17, -23, 52;

11, 17, 2, 79, -109, 203;

41, 46, 80, -20, 397, -544, 877;

...

CROSSREFS

Cf. A011971, A000110.

Sequence in context: A141323 A210876 A174785 * A022661 A120292 A179318

Adjacent sequences:  A136786 A136787 A136788 * A136790 A136791 A136792

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jan 21 2008

STATUS

approved

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Last modified October 20 17:57 EDT 2018. Contains 316398 sequences. (Running on oeis4.)