A135184 Triangle read by rows: A000012 * A128229^2 as infinite lower triangular matrices.

1, 3, 1, 5, 5, 1, 5, 11, 7, 1, 5, 11, 19, 9, 1, 5, 11, 19, 29, 11, 1, 5, 11, 19, 29, 41, 13, 1, 5, 11, 19, 29, 41, 55, 15, 1, 5, 11, 19, 29, 41, 55, 71, 17, 1, 5, 11, 19, 29, 41, 55, 71, 89, 19, 1, 5, 11, 19, 29, 41, 55, 71, 89, 109, 21, 1, 5, 11, 19, 29, 41, 55, 71, 89, 109, 131, 23, 1

Offset: 1

Author

Gary W. Adamson, Nov 21 2007

Keywords

• nonn
• tabl

Comments

Row sums = A006527: (1, 4, 11, 24, 45, 76, ...).

Examples

			First few rows of the triangle:
  1;
  3,  1;
  5,  5,  1;
  5, 11,  7,  1;
  5, 11, 19,  9,  1;
  5, 11, 19, 29, 11,  1;
  5, 11, 19, 29, 41, 13,  1;
  5, 11, 19, 29, 41, 55, 15,  1;
  ...
		

Crossrefs

Cf. A006527, A128229.

Extensions

a(19), a(20) corrected and more terms from Georg Fischer, Jun 05 2023