A127479 Triangle read by rows: A054522 * A054521 as infinite lower triangular matrices.

1, 2, 0, 3, 2, 0, 4, 0, 2, 0, 5, 4, 4, 4, 0, 6, 2, 0, 0, 2, 0, 7, 6, 6, 6, 6, 6, 0, 8, 0, 6, 0, 4, 0, 4, 0, 9, 8, 0, 6, 6, 0, 6, 6, 0, 10, 4, 8, 4, 0, 0, 4, 0, 4, 0

Offset

1,2

Comments

Row sums = A029939: (1, 2, 5, 6, 17, 10, 37, ...).

Links

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

Example

First few rows of the triangle:
  1;
  2, 0;
  3, 2, 0;
  4, 0, 2, 0;
  5, 4, 4, 4, 0;
  6, 2, 0, 0, 2, 0;
  7, 6, 6, 6, 6, 6, 0;
  8, 0, 6, 0, 4, 0, 4, 0;
  ...

Crossrefs

Cf. A029939, A054522, A054521.

Sequence in context: A035159 A103489 A213944 * A284124 A187637 A338737

Adjacent sequences: A127476 A127477 A127478 * A127480 A127481 A127482

Keyword

nonn,tabl,more

Author

Gary W. Adamson, Jan 15 2007

Extensions

Edited by N. J. A. Sloane, Aug 10 2019

Status

approved