A134347 A007318^(-1) * A134346.

1, 2, 3, 2, 8, 7, 2, 12, 24, 15, 2, 16, 48, 64, 31, 2, 20, 80, 160, 160, 63, 2, 24, 120, 320, 480, 384, 127, 2, 28, 168, 560, 1120, 1344, 896, 255, 2, 32, 224, 896, 2240, 3584, 3584, 2048, 511, 2, 36, 288, 1344, 4032, 8064, 10752, 9216, 4608, 1023

Offset

0,2

Links

Table of n, a(n) for n=0..54.

Formula

Inverse binomial transform of A134346, as infinite lower triangular matrices.

Conjecture: T(n,k) = 2^(k+1)*binomial(n,k) for k < n; T(n,n) = 2^(n+1)-1. - Knud Werner, Jan 05 2022

Example

First few rows of the triangle are:
  1;
  2,   3;
  2,   8,   7;
  2,  12,  24,  15;
  2,  16,  48,  64,  31;
  2,  20,  80, 160, 160,  63;
  2,  24, 120, 320, 480, 384, 127;
  ...

Crossrefs

Cf. A007318, A134346, A048473 (row sums).

Sequence in context: A187789 A245922 A098513 * A057761 A321477 A209998

Adjacent sequences: A134344 A134345 A134346 * A134348 A134349 A134350

Keyword

nonn,tabl

Author

Gary W. Adamson, Oct 21 2007

Status

approved