A130453 A097806 * A059268.

1, 2, 2, 2, 4, 4, 2, 4, 8, 8, 2, 4, 8, 16, 16, 2, 4, 8, 16, 32, 32, 2, 4, 8, 16, 32, 64, 64, 2, 4, 8, 16, 32, 64, 128, 128

Offset

1,2

Comments

Row sums = A033484: (1, 4, 10, 22, 46, 94, ...).

A130459 = A059268 * A097806.

Links

Table of n, a(n) for n=1..36.

Formula

A097806 * A059268 as infinite lower triangular matrices.

Example

First few rows of the triangle:
  1;
  2, 2;
  2, 4, 4;
  2, 4, 8,  8;
  2, 4, 8, 16, 16;
  2, 4, 8, 16, 32, 32;
  ...

Crossrefs

Cf. A097806, A059268, A033484, A130459.

Sequence in context: A206424 A117728 A172309 * A259981 A070705 A216326

Adjacent sequences: A130450 A130451 A130452 * A130454 A130455 A130456

Keyword

nonn,tabl

Author

Gary W. Adamson, May 26 2007

Status

approved