A131305 2*A122288 - A000012.

1, 3, 1, 5, 5, 1, 7, 3, 3, 1, 9, 15, 5, 3, 1, 11, 13, 7, 5, 3, 1, 13, 11, 11, 9, 5, 3, 1, 15, 7, 9, 7, 9, 5, 3, 1, 17, 9, 13, 11, 11, 11, 5, 3, 1, 19, 43, 15, 13, 7, 9, 11, 5, 3, 1

Offset

0,2

Links

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

Formula

2*A122288(deleting the right border of zeros) - A000012.

Example

First few rows of the triangle:
   1;
   3,  1;
   5,  5,  1;
   7,  3,  3,  1;
   9, 15,  5,  3,  1;
  11, 13,  7,  5,  3,  1;
  13, 11, 11,  9,  5,  3,  1;
  ...

Crossrefs

Cf. A122288, A122203, A131302, A131303, A131304.

Sequence in context: A210224 A131304 A131302 * A131303 A131768 A232632

Adjacent sequences: A131302 A131303 A131304 * A131306 A131307 A131308

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 27 2007

Status

approved