A130027 - OEIS

A130027

A130026 * A054525.

1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 4, 0, 0, 0, 1, -2, 4, 3, 0, 0, 1, 6, 0, 0, 0, 0, 0, 1, 1, 2, 0, 4, 0, 0, 0, 1, 2, 0, 6, 0, 0, 0, 0, 0, 1, -4, 8, 0, 0, 5, 0, 0, 0, 0, 1

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OFFSET

1,4

COMMENTS

Row sums = (1, 2, 3, ...). Left column = signed version of A070777.

LINKS

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

FORMULA

A130026 * A054525 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle:

1, 1;

2, 0, 1;

1, 2, 0, 1;

4, 0, 0, 0, 1;

-2, 4, 3, 0, 0, 1;

6, 0, 0, 0, 0, 0, 1;

1, 2, 0, 4, 0, 0, 0, 1;

...

CROSSREFS

Cf. A130027, A070777.

Sequence in context: A051010 A328342 A214269 * A116949 A359244 A204427

Adjacent sequences: A130024 A130025 A130026 * A130028 A130029 A130030

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, May 02 2007

STATUS

approved