A130322 A130321^2.

1, 4, 1, 12, 4, 1, 32, 12, 4, 1, 80, 32, 12, 4, 1, 192, 80, 32, 12, 4, 1, 448, 192, 80, 32, 12, 4, 1, 1024, 448, 192, 80, 32, 12, 4, 1, 2304, 1024, 448, 192, 80, 32, 12, 4, 1

Offset: 0

Author

Gary W. Adamson, May 24 2007

Keywords

• nonn
• tabl

Comments

Row sums = A000337: (1, 5, 17, 49, 129, 321, ...).

Examples

			First few rows of the triangle:
    1;
    4,  1;
   12,  4,  1;
   32, 12,  4,  1;
   80, 32, 12,  4,  1;
  192, 80, 32, 12,  4,  1;
  ...
		

Crossrefs

Cf. A130321, A001787, A000337.

Formula

The square of triangle A130321 as an infinite lower triangular matrix.

A001787 in every column starting (1, 4, 12, 32, 80, 192, ...).