A134444 (A000012 * A128174 + A128174 * A000012) - A000012.

1, 1, 1, 3, 1, 1, 3, 3, 1, 1, 5, 3, 3, 1, 1, 5, 5, 3, 3, 1, 1, 7, 5, 5, 3, 3, 1, 1, 7, 7, 5, 5, 3, 3, 1, 1, 9, 7, 7, 5, 5, 3, 3, 1, 1, 9, 9, 7, 7, 5, 5, 3, 3, 1, 1

Offset

0,4

Comments

Row sums = A000982: (1, 2, 5, 8, 13, 18, 25, ...).

Links

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

Formula

(A000012 * A128174 + A128174 * A000012) - A000012, as infinite lower triangular matrices. Triangle read by rows, n-th row = n terms of odd numbers repeated, starting from the right.

Example

First few rows of the triangle:
  1;
  1, 1;
  3, 1, 1;
  3, 3, 1, 1;
  5, 3, 3, 1, 1;
  5, 5, 3, 3, 1, 1;
  ...

Crossrefs

Cf. A128174, A000012, A000982.

Sequence in context: A327481 A152714 A174546 * A176149 A091442 A025834

Adjacent sequences: A134441 A134442 A134443 * A134445 A134446 A134447

Keyword

nonn,tabl

Author

Gary W. Adamson, Oct 25 2007

Status

approved