A133094 A007318 * A133080 * A097806, as infinite lower triangular matrices.

1, 3, 1, 5, 3, 1, 7, 7, 5, 1, 9, 14, 14, 5, 1, 11, 25, 30, 16, 7, 1, 13, 41, 55, 41, 27, 7, 1, 15, 63, 91, 91, 77, 29, 9, 1, 17, 92, 140, 182, 182, 92, 44, 9, 1, 19, 129, 204, 336, 378, 246, 156, 46, 11, 1

Offset

1,2

Comments

Row sums give A133095.

Binomial transform of an infinite lower triangular matrix with (1,1,1,...) in the main diagonal, (2,1,2,1,...) in the subdiagonal and (0,1,0,1,...) in the subsubdiagonal.

Links

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

Example

First few rows of the triangle:
   1;
   3,  1;
   5,  3,  1;
   7,  7,  5,  1;
   9, 14, 14,  5,  1;
  11, 25, 30, 16,  7,  1;
  13, 41, 55, 41, 27,  7,  1;
  ...

Crossrefs

Cf. A133080, A097806, A133095.

Sequence in context: A130301 A133601 A258207 * A300437 A208607 A159291

Adjacent sequences: A133091 A133092 A133093 * A133095 A133096 A133097

Keyword

nonn,tabl

Author

Gary W. Adamson, Sep 09 2007

Status

approved