A130297 A130296^2.

1, 4, 1, 8, 2, 1, 13, 3, 2, 1, 19, 4, 3, 2, 1, 26, 5, 4, 3, 2, 1, 34, 6, 5, 4, 3, 2, 1, 43, 7, 6, 5, 4, 3, 2, 1, 53, 8, 7, 6, 5, 4, 3, 2, 1, 64, 9, 8, 7, 6, 5, 4, 3, 2, 1

Offset

1,2

Comments

Left border = A034856: (1, 4, 8, 13, 19, 26, 34, ...).

Row sums = A028387: (1, 5, 11, 19, 29, 41, 55, ...).

Links

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

Formula

Square of A130296 as an infinite lower triangular matrix.

Example

First few rows of the triangle:
   1;
   4, 1;
   8, 2, 1;
  13, 3, 2, 1;
  19, 4, 3, 2, 1;
  26, 5, 4, 3, 2, 1;
  ...

Crossrefs

Cf. A130296, A034856, A028387.

Sequence in context: A106475 A134829 A245966 * A271478 A112032 A199049

Adjacent sequences: A130294 A130295 A130296 * A130298 A130299 A130300

Keyword

nonn,tabl

Author

Gary W. Adamson, May 20 2007

Status

approved