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A131414 A130302 + A130303 - A000012. 1
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 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified July 28 13:36 EDT 2021. Contains 346332 sequences. (Running on oeis4.)