A161362 Triangle read by rows, self-convolution of A161361, row sums = A000521.

1, 372, 372, 29250, 138384, 29250, -134120, 10881000, 10881000, -134120, 54261375, -49892640, 855562500, -49892640, 54261375, -6139293372, 20185231500, -3923010000, -3923010000, 20185231500, -6139293372

Offset: 0

Author

Gary W. Adamson and Alexander R. Povolotsky, Jun 07 2009

Keywords

• tabl
• sign

Comments

Sum of n-th row terms = A000521(n-1).

Examples

			First few rows of the triangle =
1;
372, 372;
29250, 138384, 29250;
-134120, 10881000, 10881000, -134120;
54261375, -49892640, 855562500, -49892640, 54261375;
-6139293372, 20185231500, -3923010000, -3923010000, 20185231500, -6139293372;
...
The multiplication table by rows:
.......1,.......372,.....29250,...
.....372,.....38384,..10881000,...
...29250,..10881000...
.-134120...
...
Take antidiagonals such that row 2 = (29250, 138384, 29250), sum = 196884
= A000521(2).
		

Crossrefs

Cf. A000521, A161362

Formula

Antidiagonals of a table, A161361^2, where A161361 = the convolution square root of A000521.