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A128308 Binomial transform of A128307. 2
1, 1, 1, 2, 2, 1, 6, 4, 3, 1, 19, 10, 7, 4, 1, 59, 29, 17, 11, 5, 1, 180, 88, 46, 28, 16, 6, 1, 544, 268, 134, 74, 44, 22, 7, 1, 1637, 812, 402, 208, 118, 66, 29, 8, 1, 4917, 2449, 1214, 610, 326, 184, 95, 37, 9, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row sums = A007051: (1, 2, 5, 14, 41, 122,...).

See also the comments in A111277.

LINKS

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

FORMULA

A007318 * A128307 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 2, 1;

6, 4, 3, 1;

19, 10, 7, 4, 1;

59, 29, 17, 11, 5, 1;

...

CROSSREFS

Cf. A007051, A128307, A007318.

The first column is A111277.

Sequence in context: A209692 A178886 A065052 * A109152 A130469 A106381

Adjacent sequences:  A128305 A128306 A128307 * A128309 A128310 A128311

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Feb 25 2007

EXTENSIONS

Crossref to A111277 added by Peter J. Taylor, Jul 23 2014

STATUS

approved

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Last modified January 18 09:26 EST 2022. Contains 350454 sequences. (Running on oeis4.)