A136790 Triangle read by rows: A011971 * A007318^(-1).

1, -1, 2, 4, -7, 5, -7, 32, -35, 15, 37, -131, 228, -171, 52, -94, 646, -1379, 1540, -864, 203, 587, -3146, 8648, -12483, 10308, -4588, 877, -1925, 17464, -55125, 98923, -106834, 69951, -25717, 4140, 13606, -98053, 367914, -781241, 1044519, -898394, 486811, -152169, 21147

Offset: 0

Author

Gary W. Adamson, Jan 21 2008

Keywords

• tabl
• sign

Comments

Row sums = the Bell numbers, A000110: (1, 1, 2, 5, 15, 203, ...).

A136789 = A011971 * A130595. [Corrected by Georg Fischer, Jun 05 2023]

Examples

			First few rows of the triangle:
    1;
   -1,    2;
    4,   -7,     5;
   -7,   32,   -35,   15;
   37, -131,   228, -171,   52;
  -94,  646, -1379, 1540, -864, 203;
  ...
		

Crossrefs

Cf. A000110, A130595, A136789.

Formula

Product of the Aitken triangle (A011971) and the inverse of Pascal's Triangle (A007318).

Extensions

a(28) = -1925 corrected by Georg Fischer, Jun 05 2023