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

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, 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