A134379 A084938 * A000012.

1, 1, 1, 2, 2, 1, 5, 5, 3, 1, 15, 15, 9, 4, 1, 54, 54, 30, 14, 5, 1, 235, 235, 115, 51, 20, 6, 1, 1237, 1237, 517, 205, 79, 27, 7, 1, 7790, 7790, 2750, 938, 332, 115, 35, 8, 1, 57581, 57581, 17261, 4973, 1545, 505, 160, 44, 9, 1

Offset

0,4

Comments

Left border = A051295.

Row sums = A134378.

Links

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

Formula

A084938 * A000012, partial sum triangle by rows, starting from the right of A084938.

Example

First few rows of the triangle:
   1;
   1,  1;
   2,  2,  1;
   5,  5,  3,  1;
  15, 15,  9,  4,  1;
  54, 54, 30, 14,  5,  1;
  ...

Crossrefs

Cf. A084938, A134378, A051295.

Sequence in context: A171567 A110488 A271025 * A108087 A123158 A185414

Adjacent sequences: A134376 A134377 A134378 * A134380 A134381 A134382

Keyword

nonn,tabl

Author

Gary W. Adamson, Oct 22 2007

Status

approved