A134480 A134478 * A000012.

1, 3, 2, 9, 7, 4, 18, 15, 11, 6, 30, 26, 21, 15, 8, 45, 40, 34, 27, 19, 10, 63, 57, 50, 42, 33, 23, 12, 84, 77, 69, 60, 50, 39, 27, 14, 108, 100, 91, 81, 70, 58, 45, 31, 16, 135, 126, 116, 105, 93, 80, 66, 51, 35, 18

Offset

0,2

Comments

Row sums = A134481: (1, 5, 20, 50, 100, 175, ...).

Left border = A134479.

Links

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

Formula

A134478 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums of A134478 terms starting from the right.

Example

First few rows of the triangle:
   1;
   3,  2;
   9,  7,  4;
  18, 15, 11,  6;
  30, 26, 21, 15,  8;
  45, 40, 34, 27, 19, 10;
  63, 57, 50, 42, 33, 23, 12;
  ...

Crossrefs

Cf. A134478, A134481, A134479.

Sequence in context: A346109 A362220 A019778 * A182950 A011323 A227630

Adjacent sequences: A134477 A134478 A134479 * A134481 A134482 A134483

Keyword

nonn,tabl,more

Author

Gary W. Adamson, Oct 27 2007

Status

approved