A131249 A007318 * A052509.

1, 2, 1, 4, 4, 1, 8, 12, 5, 1, 16, 32, 18, 6, 1, 32, 80, 57, 24, 7, 1, 64, 192, 168, 82, 31, 8, 1, 128, 448, 471, 260, 113, 39, 9, 1, 256, 1024, 1270, 790, 374, 152, 48, 10, 1

Offset

0,2

Comments

Row sums = A061667: (1, 3, 9, 26, 73, 201, ...).

Links

Table of n, a(n) for n=0..44.

Formula

Binomial transform of A052509.

Example

First few rows of the triangle:
   1;
   2,  1;
   4,  4,  1;
   8, 12,  5,  1;
  16, 32, 18,  6,  1;
  32, 80, 57, 24,  7,  1;
  ...

Crossrefs

Cf. A061667, A007318, A052509.

Sequence in context: A156708 A131250 A140693 * A048807 A134397 A134395

Adjacent sequences: A131246 A131247 A131248 * A131250 A131251 A131252

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 23 2007

Status

approved