A131258 A129686^(-1) * A052509.

1, 1, 1, 0, 2, 1, 0, 2, 2, 1, 1, 2, 3, 2, 1, 1, 3, 5, 3, 2, 1, 0, 4, 8, 6, 3, 2, 1, 0, 4, 11, 12, 6, 3, 2, 1, 1, 4, 14, 20, 13, 6, 3, 2, 1, 1, 5, 18, 30, 25, 13, 6, 3, 2, 1

Offset

0,5

Comments

Row sums = A097083: (1, 2, 3, 5, 9, 15, ...).

Links

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

Formula

A129686^(-1) * A052509 as infinite lower triangular matrices, where A129686 = the alternate term operator.

Example

First few rows of the triangle:
  1;
  1, 1;
  0, 2, 1;
  0, 2, 2, 1;
  1, 2, 3, 2, 1;
  1, 3, 5, 3, 2, 1;
  0, 4, 8, 6, 3, 2, 1;
  ...

Crossrefs

Cf. A129686, A052509, A097083.

Sequence in context: A305152 A170983 A113423 * A298596 A029366 A260945

Adjacent sequences: A131255 A131256 A131257 * A131259 A131260 A131261

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 23 2007

Status

approved