A131414 A130302 + A130303 - A000012.

1, 5, 1, 10, 3, 1, 16, 5, 3, 1, 23, 7, 5, 3, 1, 31, 9, 7, 5, 3, 1, 40, 11, 9, 7, 5, 3, 1, 50, 13, 11, 9, 7, 5, 3, 1, 61, 15, 13, 11, 9, 7, 5, 3, 1, 73, 17, 15, 13, 11, 9, 7, 5, 3, 1

Offset

1,2

Comments

Left column = A052905: (1, 5, 10, 16, 23, 31,...). Row sums = A095794: (1, 6, 14, 25, 39,...).

Links

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

Formula

A130302 + A130303 - A000012 as infinite lower triangular matrices.

Example

First few rows of the triangle are:
1;
5, 1;
10, 3, 1;
16, 5, 3, 1;
23, 7, 5, 3, 1;
31, 9, 7, 5, 3, 1;
...

Crossrefs

Cf. A130302, A130303, A052905, A095794.

Sequence in context: A147061 A147386 A145759 * A333448 A050308 A063475

Adjacent sequences: A131411 A131412 A131413 * A131415 A131416 A131417

Keyword

nonn,tabl

Author

Gary W. Adamson, Jul 08 2007

Status

approved