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A130055 A129691 * A127093. 1
1, 0, 2, -1, 0, 3, -1, 0, 0, 4, -3, 0, 0, 0, 5, 0, -2, 0, 0, 0, 6, -5, 0, 0, 0, 0, 0, 7, -2, -2, 0, 0, 0, 0, 0, 8, -3, 0, -3, 0, 0, 0, 0, 0, 9, 0, -6, 0, 0, 0, 0, 0, 0, 0, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row sums = d(n), A000005: (1, 2, 2, 3, 2, 4, 2, 4, 3, 4,...). Left column = A130054: (1, 0, -1, -1, -3, 0, -5, -2, -3, 0,...).

LINKS

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

FORMULA

A129691 * A127093 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

0, 2;

-1, 0, 3;

-1, 0, 0, 4;

-3, 0, 0, 0, 5;

0, -2, 0, 0, 0, 6;

-5, 0, 0, 0, 0, 0, 7;

...

CROSSREFS

Cf. A129691, A127093, A000005, A130054.

Sequence in context: A082754 A063173 A120111 * A202452 A127013 A117362

Adjacent sequences:  A130052 A130053 A130054 * A130056 A130057 A130058

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, May 04 2007

STATUS

approved

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Last modified January 27 04:57 EST 2020. Contains 331291 sequences. (Running on oeis4.)