A128260 A128229 * A051731.

1, 2, 1, 3, 2, 1, 4, 1, 3, 1, 5, 4, 0, 4, 1, 6, 1, 1, 0, 5, 1, 7, 6, 6, 0, 0, 6, 1, 8, 1, 0, 1, 0, 0, 7, 1, 9, 8, 1, 8, 0, 0, 0, 8, 1, 10, 1, 9, 0, 1, 0, 0, 0, 9, 1

Offset

1,2

Comments

Row sums = A128261: (1, 3, 6, 9, 14, 14, 26, 18, 35, 31, ...).

Links

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

Example

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

Crossrefs

Cf. A128229, A051731, A128261, A128259.

Sequence in context: A138530 A002341 A348888 * A083368 A112379 A361101

Adjacent sequences: A128257 A128258 A128259 * A128261 A128262 A128263

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 21 2007

Status

approved