A166452 Binomial transform of A166242.

1, 3, 9, 21, 45, 99, 225, 507, 1101, 2295, 4653, 9381, 19221, 40491, 87453, 191205, 417117, 898119, 1897125, 3922977, 7945713, 15800367, 30960765, 60068235, 116058981, 224778159, 439342677, 871864317, 1764029985, 3643978479, 7672441101, 16397598555, 35377739037

Offset

-1,2

Links

Table of n, a(n) for n=-1..31.

Formula

Equals A007318 as an infinite lower triangular matrix * A166242 as a vector.

Example

a(2) = 21 = (1, 3, 3, 1) dot (1, 2, 4, 2) = (1 + 6 + 12 + 2).

Crossrefs

Cf. A007318, A166242.

Sequence in context: A107351 A376196 A068156 * A052101 A063830 A062444

Adjacent sequences: A166449 A166450 A166451 * A166453 A166454 A166455

Keyword

nonn

Author

Gary W. Adamson, Oct 13 2009

Status

approved