A128181 A007318 * A128179 as infinite lower triangular matrices.

1, 1, 2, 2, 4, 3, 4, 8, 9, 4, 8, 16, 21, 16, 5, 16, 32, 45, 44, 25, 6, 32, 64, 93, 104, 80, 36, 7, 64, 128, 189, 228, 210, 132, 49, 8, 128, 256, 381, 480, 495, 384, 203, 64, 9, 256, 512, 765, 988, 1095, 978, 651, 296, 81, 10

Offset

1,3

Comments

Binomial transform of A128179.

Row sums = A058396 starting (1, 3, 9, 25, 66, 168, ...).

Links

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

Example

First few rows of the triangle:
   1;
   1,  2;
   2,  4,  3;
   4,  8,  9,   4;
   8, 16, 21,  16,  5;
  16, 32, 45,  44, 25,  6;
  32, 64, 93, 104, 80, 36, 7;
  ...

Crossrefs

Cf. A128179, A097807, A002260, A058396.

Sequence in context: A328774 A131816 A223541 * A125185 A274895 A173387

Adjacent sequences: A128178 A128179 A128180 * A128182 A128183 A128184

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 17 2007

Status

approved