A134417 A007318 * Triangle with A133632 as the diagonal and the rest zeros.

1, 1, 4, 1, 8, 5, 1, 12, 15, 20, 1, 16, 30, 80, 25, 1, 20, 50, 200, 125, 100, 1, 24, 75, 400, 375, 600, 125, 1, 28, 105, 700, 875, 2100, 875, 500, 1, 32, 140, 1120, 1750, 5600, 3500, 4000, 625, 1, 36, 180, 1680, 3150, 12600, 10500, 18000, 5625, 2500

Offset

1,3

Comments

Row sums = A134418 (1, 5, 14, 48, 152, 496, 2600, 5184, ...).

Links

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

Formula

Binomial transform of an infinite lower triangular matrix with A133632 (1, 4, 5, 20, 25, 100, ...) as the main diagonal and the rest zeros.

Example

First few rows of the triangle:
  1;
  1,  4;
  1,  8,  5;
  1, 12, 15,  20;
  1, 16, 30,  80,  25;
  1, 20, 50,  20, 125, 100;
  1, 24, 75, 400, 375, 600, 125;
  ...

Crossrefs

Cf. A133632, A134418.

Sequence in context: A193337 A141567 A254707 * A116080 A343125 A205296

Adjacent sequences: A134414 A134415 A134416 * A134418 A134419 A134420

Keyword

nonn,tabl

Author

Gary W. Adamson, Oct 24 2007

Status

approved