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

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:
  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;
  ...

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