A138015 Triangle read by rows, antidiagonals of an array formed by A000012 * A136579. Replace the term "n" in the correlation triangle A003983 with A003422(n).

1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 4, 2, 1, 1, 2, 4, 4, 2, 1, 1, 2, 4, 10, 4, 2, 1, 1, 2, 4, 10, 10, 4, 2, 1, 1, 2, 4, 10, 34, 10, 4, 2, 1, 1, 2, 4, 10, 34, 34, 10, 4, 2, 1, 1, 2, 4, 10, 34, 154, 34, 10, 4, 2, 1, 1, 2, 4, 10, 34, 154, 154, 34, 10, 4, 2, 1

Offset

1,5

Comments

A003422 = (0, 1, 2, 4, 10, 34, 154, ...).

Row sums = A138016: (1, 2, 4, 6, 10, 14, 24, 34, 68, 102, ...).

Links

Table of n, a(n) for n=1..78.

Example

First few rows of the triangle:
  1;
  1, 1;
  1, 2, 1;
  1, 2, 2,  1;
  1, 2, 4,  2,  1;
  1, 2, 4,  4,  2,  1;
  1, 2, 4, 10,  4,  2,  1;
  1, 2, 4, 10, 10,  4,  2, 1;
  1, 2, 4, 10, 34, 10,  4, 2, 1;
  1, 2, 4, 10, 34, 34, 10, 4, 2, 1;
  ...

Crossrefs

Cf. A136579, A138016, A003983, A003422.

Sequence in context: A348690 A238392 A144464 * A327742 A103444 A099172

Adjacent sequences: A138012 A138013 A138014 * A138016 A138017 A138018

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 28 2008

Extensions

Example corrected by Philippe Deléham, Feb 18 2013

Status

approved