A134870 A051731 + A000012 - A103451.

1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1

Offset

1,8

Comments

Row sums = A134871: (1, 2, 3, 5, 5, 8, 7, 10, 10, 12, 11, ...).

Links

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

Formula

A051731 + A000012 - A103451 as infinite lower triangular matrices.

Example

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

Crossrefs

Cf. A051731, A134871, A103451, A000012.

Sequence in context: A290104 A308479 A031280 * A031286 A031276 A305080

Adjacent sequences: A134867 A134868 A134869 * A134871 A134872 A134873

Keyword

nonn,tabl

Author

Gary W. Adamson, Nov 14 2007

Status

approved