A128186 A051731 * A128174.

1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 2, 0, 1, 0, 1, 2, 2, 1, 1, 0, 1, 2, 0, 1, 0, 1, 0, 1, 1, 3, 0, 2, 0, 1, 0, 1, 3, 0, 2, 0, 1, 0, 1, 0, 1, 2, 2, 1, 1, 1, 1, 0, 1, 0, 1

Offset

1,4

Comments

Left column = A001227.

Row sums = A079247: (1, 2, 3, 4, 4, 7, 5, 8, 8, 10, ...).

A128187 = A128174 * A051731.

Links

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

Formula

A051731 * A128174 as infinite lower triangular matrices.

Example

First few rows of the triangle:
  1;
  1, 1;
  2, 0, 1;
  1, 2, 0, 1;
  2, 0, 1, 0, 1;
  2, 2, 1, 1, 0, 1;
  2, 0, 1, 0, 1, 0, 1;
  ...

Crossrefs

Cf. A128174, A051731, A128187, A079247, A001227.

Sequence in context: A124763 A029372 A029377 * A048823 A173655 A025871

Adjacent sequences: A128183 A128184 A128185 * A128187 A128188 A128189

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 17 2007

Status

approved