A127740 Natural number transform of Aitken's triangle.

1, 2, 4, 6, 9, 15, 20, 28, 40, 60, 75, 100, 135, 185, 260, 312, 402, 522, 684, 906, 1218, 1421, 1785, 2254, 2863, 3661, 4718, 6139, 7016, 8640, 10680, 13256, 16528, 20712, 26104, 33120, 37260, 45153, 54873, 66888, 81801, 100395, 123696, 153063, 190323

Offset: 0

Author

Gary W. Adamson, Jan 27 2007

Keywords

• nonn
• tabl

Comments

Left column (1, 2, 6, 20, ...) = A052889.

Row sums give A127741.

Examples

			First few rows of the triangle:
   1;
   2,   4;
   6,   9,  15;
  20,  28,  40,  60;
  75, 100, 135, 185, 260;
  ...
		

Crossrefs

Cf. A005493, A052889, A011971, A127741.

Formula

A127648 * A011971 as infinite lower triangular matrices.