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A131373 A046854 + A065941 - A000012. 0
1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 5, 2, 1, 1, 3, 6, 6, 3, 1, 1, 3, 10, 7, 10, 3, 1, 1, 4, 11, 14, 14, 11, 4, 1, 1, 4, 16, 15, 29, 15, 16, 4, 1, 1, 5, 17, 26, 35, 35, 26, 17, 5, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

Row sums = A131269: (1, 2, 3, 6, 11, 20, 35, 60,...).

LINKS

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

FORMULA

A046854 + A065941 - A000012 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 1, 1;

1, 2, 2, 1;

1, 2, 5, 2, 1;

1, 3, 6, 6, 3, 1;

1, 3, 10, 7, 10, 3, 1;

1, 4, 11, 14, 14, 11, 4, 1;

1, 4, 16, 15, 29, 15, 16, 4, 1;

...

CROSSREFS

Cf. A056854, A065941, A000012, A131269.

Sequence in context: A101489 A104156 A070166 * A245185 A034853 A242093

Adjacent sequences:  A131370 A131371 A131372 * A131374 A131375 A131376

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jul 03 2007

STATUS

approved

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Last modified September 20 01:39 EDT 2020. Contains 337248 sequences. (Running on oeis4.)