A128980 - OEIS

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A128980

A054525 * A129691(unsigned).

1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 3, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 5, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 3, 0, 0, 0, 0, 0, 0, 0, 1

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OFFSET

1,11

COMMENTS

Row sums = A070777: (1, 1, 2, 1, 4, 2, 6, 1, 2, 4, ...). A129691 = the unsigned inverse of A054523.

LINKS

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

FORMULA

Moebius transform of A129691

EXAMPLE

First few rows of the triangle:

0, 1;

1, 0, 1;

0, 0, 0, 1;

3, 0, 0, 0, 1;

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

5, 0, 0, 0, 0, 0, 1;

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

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

...

CROSSREFS

Cf. A054525, A129691, A070777, A054523.

Sequence in context: A204060 A359780 A085393 * A143276 A096693 A193139

Adjacent sequences: A128977 A128978 A128979 * A128981 A128982 A128983

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Apr 29 2007

STATUS

approved