A134840 Triangle, antidiagonals of an array formed by A051731 * A126988(transform).

1, 1, 2, 1, 3, 3, 1, 2, 3, 4, 1, 3, 4, 6, 5, 1, 2, 3, 4, 5, 6, 1, 3, 3, 7, 5, 9, 7, 1, 2, 4, 4, 5, 8, 7, 8, 1, 3, 3, 6, 6, 9, 7, 12, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 3, 4, 7, 5, 12, 7, 14, 12, 15, 11

Offset

1,3

Comments

Row sums = A069153: (1, 3, 7, 10, 19, 21, 35, 39, ...).

Links

Table of n, a(n) for n=1..66.

Formula

Triangle, antidiagonals of an array formed by A051731 * A126988(transform).

Example

First few rows of the array:
  1, 2, 3, 4, 5, 6, 7, ...
  1, 3, 3, 6, 5, 9, 7, ...
  1, 2, 4, 4, 5, 8, 7, ...
  1, 3, 3, 7, 5, 9, 7, ...
  1, 2, 3, 4, 6, 6, 7, ...
  ...
First few rows of the triangle:
  1;
  1, 2;
  1, 3, 3;
  1, 2, 3, 4;
  1, 3, 4, 6, 5;
  1, 2, 3, 4, 5, 6;
  1, 2, 3, 7, 5, 9, 7;
  1, 2, 4, 4, 5, 8, 7, 8;
  ...

Crossrefs

Cf. A051731, A126988, A069153.

Sequence in context: A140815 A365958 A351963 * A352356 A229742 A126572

Adjacent sequences: A134837 A134838 A134839 * A134841 A134842 A134843

Keyword

nonn,tabl

Author

Gary W. Adamson, Nov 12 2007

Status

approved