A130305 Triangle read by rows: A007318 * A130304 as infinite lower triangular matrices.

1, 2, 1, 3, 3, 1, 4, 6, 4, 1, 6, 10, 10, 5, 1, 12, 16, 20, 15, 6, 1, 28, 28, 36, 35, 21, 7, 1, 64, 56, 64, 71, 56, 28, 8, 1, 136, 120, 120, 135, 127, 84, 36, 9, 1, 272, 256, 240, 255, 262, 211, 120, 45, 10, 1

Offset

1,2

Links

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

Formula

Binomial transform of A130304.

Example

First few rows of the triangle:
   1;
   2,  1;
   3,  3,  1;
   4,  6,  4,  1;
   6, 10, 10,  5,  1;
  12, 16, 20, 15,  6,  1;
  28, 28, 36, 35, 21,  7,  1;
  ...

Crossrefs

Cf. A007318, A038504 (left column), A130304.

Sequence in context: A126885 A239986 A285548 * A323346 A143328 A192001

Adjacent sequences: A130302 A130303 A130304 * A130306 A130307 A130308

Keyword

nonn,tabl

Author

Gary W. Adamson, May 20 2007

Status

approved