A130299 A130296 * A051340.

1, 3, 2, 5, 3, 3, 7, 4, 4, 4, 9, 5, 5, 5, 5, 11, 6, 6, 6, 6, 6, 13, 7, 7, 7, 7, 7, 7, 15, 8, 8, 8, 8, 8, 8, 8, 17, 9, 9, 9, 9, 9, 9, 9, 9, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10

Offset

1,2

Comments

Row sums = A018387: (1, 5, 11, 19, 29, 41, 55, ...).

A130298 = A051340 * A130296.

Links

Table of n, a(n) for n=1..55.

Formula

A130296 * A051340 as infinite lower triangular matrices.

Example

First few rows of the triangle:
   1;
   3, 2;
   5, 3, 3;
   7, 4, 4, 4;
   9, 5, 5, 5, 5;
  11, 6, 6, 6, 6, 6;
  13, 7, 7, 7, 7, 7, 7;
  ...

Crossrefs

Cf. A051340, A130296, A130298, A028387.

Sequence in context: A361783 A194736 A333363 * A143309 A206562 A155981

Adjacent sequences: A130296 A130297 A130298 * A130300 A130301 A130302

Keyword

nonn,tabl

Author

Gary W. Adamson, May 20 2007

Status

approved