A132309 - OEIS

A132309

A007318^(-1) * A132307.

1, 2, 1, 2, 5, 1, 2, 5, 8, 1, 2, 9, 9, 11, 1, 2, 9, 24, 14, 14, 1, 2, 13, 25, 50, 20, 17, 1, 2, 13, 48, 55, 90, 27, 20, 1, 2, 17, 49, 133, 105, 147, 35, 23, 1, 2, 17, 80, 140, 308, 182, 224, 44, 26, 1

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OFFSET

0,2

COMMENTS

Row sums = A077552: (1, 3, 8, 16, 32, 64, 128, ...).

LINKS

Table of n, a(n) for n=0..54.

FORMULA

Inverse binomial transform of triangle A132307.

EXAMPLE

First few rows of the triangle:

2, 1;

2, 5, 1;

2, 5, 8, 1;

2, 9, 9, 11, 1;

2, 9, 24, 14, 14, 1;

2, 13, 25, 50, 20, 17, 1;

2, 13, 48, 55, 90, 27, 20, 1;

...

CROSSREFS

Cf. A132307, A077552.

Sequence in context: A175011 A211700 A171840 * A144224 A122881 A210217

Adjacent sequences: A132306 A132307 A132308 * A132310 A132311 A132312

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 18 2007

STATUS

approved