A131302 2*A122203 - A000012.

1, 3, 1, 5, 5, 1, 7, 3, 3, 1, 9, 13, 5, 3, 1, 11, 15, 7, 5, 3, 1, 13, 11, 11, 9, 5, 3, 1, 15, 9, 9, 7, 9, 5, 3, 1, 17, 7, 13, 11, 11, 11, 5, 3, 1, 19, 33, 15, 13, 7, 9, 11, 5, 3, 1

Offset

1,2

Links

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

Formula

2*A122203(deleting the right border of zeros) - A000012.

Example

Row 4 = (7, 3, 3, 1) = 2*(4, 2, 2, 1) - (1, 1, 1, 1). First few rows of the triangle are:
1;
3, 1;
5, 5, 1;
7, 3, 3, 1;
9, 13, 5, 3, 1;
11, 15, 7, 5, 3, 1;
13, 11, 11 9, 5, 3, 1;
...

Crossrefs

Cf. A122203, A000012.

Sequence in context: A135184 A210224 A131304 * A131305 A131303 A131768

Adjacent sequences: A131299 A131300 A131301 * A131303 A131304 A131305

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 27 2007

Status

approved