A133114 - OEIS

A133114

A000012 * A007318 * A133080.

1, 1, 1, 2, 1, 1, 2, 2, 3, 1, 3, 2, 7, 3, 1, 3, 3, 13, 7, 5, 1, 4, 3, 22, 13, 16, 5, 1, 4, 4, 34, 22, 40, 16, 7, 1, 5, 4, 50, 34, 86, 40, 29, 7, 1, 5, 5, 70, 50, 166, 86, 91, 29, 9, 1

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OFFSET

1,4

COMMENTS

Row sums = 2^n

LINKS

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

FORMULA

A000012(signed) * A007318 * A133080 as infinite lower triangular matrices, where A000012(signed) = [1; -1,1; 1,-1,1; -1,1,-1,1;...).

EXAMPLE

First few rows of the triangle are:

1, 1;

2, 1, 1;

2, 2, 3, 1;

3, 2, 7, 3, 1;

3, 3, 13, 7, 5, 1;

4, 3, 22, 13, 16, 5, 1;

4, 4, 34, 22, 40, 16, 7, 1;

...

CROSSREFS

Cf. A000012, A133080, A007318.

Sequence in context: A057820 A054012 A062083 * A156265 A232992 A165125

Adjacent sequences: A133111 A133112 A133113 * A133115 A133116 A133117

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Sep 14 2007

STATUS

approved