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A131256 A000012(signed) * A052509. 1
1, 0, 1, 1, 1, 1, 0, 2, 1, 1, 1, 2, 3, 1, 1, 0, 3, 4, 3, 1, 1, 1, 3, 7, 5, 3, 1, 1, 0, 4, 9, 10, 5, 3, 1, 11, 4, 13, 16, 11, 5, 3, 1, 1, 0, 5, 16, 26, 20, 11, 5, 3, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

Row sums = A052952: (1, 1, 3, 4, 8, 12, 21, 33,...). A131257 = A052509 * A000012(signed).

LINKS

Table of n, a(n) for n=0..53.

FORMULA

A000012(signed) * A052509, where the signed version of A000012 = (1; -1,1; 1,-1,1;...).

EXAMPLE

First few rows of the triangle are:

1;

0, 1;

1, 1, 1;

0, 2, 1, 1;

1, 2, 3, 1, 1;

0, 3, 4, 3, 1, 1;

1, 3, 7, 5, 3, 1, 1;

...

CROSSREFS

Cf. A052509, A000012, A131257.

Sequence in context: A284995 A243005 A058393 * A245562 A304495 A175069

Adjacent sequences:  A131253 A131254 A131255 * A131257 A131258 A131259

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jun 23 2007

STATUS

approved

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Last modified November 12 22:10 EST 2019. Contains 329079 sequences. (Running on oeis4.)