A130267 A051731 * A051340.

1, 2, 2, 2, 1, 3, 3, 3, 1, 4, 2, 1, 1, 1, 5, 4, 4, 4, 1, 1, 6, 2, 1, 1, 1, 1, 1, 7, 4, 4, 2, 5, 1, 1, 1, 8, 3, 2, 4, 1, 1, 1, 1, 1, 9, 4, 4, 2, 2, 6, 1, 1, 1, 1, 10

Offset

0,2

Comments

Row sums = A129235: (1, 4, 6, 11, 10, 20, ...).

Left border = A000005, d(n): (1, 2, 2, 3, 2, 4, ...).

Links

Table of n, a(n) for n=0..54.

Formula

Inverse Moebius transform of A051340.

Example

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

Crossrefs

Cf. A051340, A051731, A000005, A129235.

Sequence in context: A209266 A359930 A269400 * A060610 A352671 A351581

Adjacent sequences: A130264 A130265 A130266 * A130268 A130269 A130270

Keyword

nonn,tabl

Author

Gary W. Adamson, May 18 2007

Status

approved