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A136790 Triangle read by rows: A011971 * A007318^(-1). 1
1, -1, 2, 4, -7, 5, -7, 32, -35, 15, 37, -131, 228, -171, 52, -94, 646, -1379, 1540, -864, 203, 587, -3146, 8648, -12483, 10308, -4588, 877, -1955, 17464, -55125, 98923, -106834, 69951, -25717, 4140, 13606, -98053, 367914, -781241, 1044519, -898394, 486811, -152169, 21147 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Row sums = the Bell numbers, A000110: (1, 1, 2, 5, 15, 203,...). A136789 = A007318^(-1) * A011971.

LINKS

Table of n, a(n) for n=0..44.

FORMULA

Product of the Aitken triangle (A011971) and the inverse of Pascal's Triangle (A007318).

EXAMPLE

First few rows of the triangle are:

1;

-1, 2;

4, -7, 5;

-7, 32, -35, 15;

37, -131, 228, -171, 52;

-94, 646, -1379, 1540, -864, 203;

...

CROSSREFS

Cf. A000110, A136789.

Sequence in context: A236629 A021408 A011178 * A073158 A035311 A182310

Adjacent sequences:  A136787 A136788 A136789 * A136791 A136792 A136793

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jan 21 2008

STATUS

approved

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Last modified October 18 01:01 EDT 2018. Contains 316297 sequences. (Running on oeis4.)