A131303 2*A122204(deleting the right border of zeros) - 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, 115, 7, 9, 7, 9, 5, 3, 1, 17, 9, 13, 11, 11, 11, 5, 3, 1, 19, 43, 15, 13, 7, 7, 7, 5, 3, 1

Offset

1,2

Links

Table of n, a(n) for n=1..54.

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. A122204, A000012, A122203, A131302.

Sequence in context: A131304 A131302 A131305 * A131768 A232632 A084533

Adjacent sequences: A131300 A131301 A131302 * A131304 A131305 A131306

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 27 2007

Status

approved