A129237 A051731 * A129234.

1, 3, 2, 4, 0, 3, 7, 5, 0, 4, 6, 0, 0, 0, 5, 12, 6, 7, 0, 0, 6, 8, 0, 0, 0, 0, 0, 7, 15, 10, 0, 9, 0, 0, 0, 8, 13, 0, 8, 0, 0, 0, 0, 0, 9, 18, 8, 0, 0, 11, 0, 0, 0, 0, 10

Offset

1,2

Comments

Left border = Sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8, ...). A129236 = Moebius transform of A129234.

Links

Table of n, a(n) for n=1..55.

Formula

A051731 * A129234 as infinite lower triangular matrices.

Example

First few rows of the triangle:
   1;
   3,  2;
   4,  0, 3;
   7,  5, 0, 4;
   6,  0, 0, 0, 5;
  12,  6, 7, 0, 0, 6;
   8,  0, 0, 0, 0, 0, 7;
  15, 10, 0, 9, 0, 0, 0, 8;
  ...

Crossrefs

Cf. A129234, A129235, A129236, A054525, A051731, A000203.

Sequence in context: A070471 A070690 A160387 * A127099 A004545 A127481

Adjacent sequences: A129234 A129235 A129236 * A129238 A129239 A129240

Keyword

nonn,tabl

Author

Gary W. Adamson, Apr 05 2007

Status

approved