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A132478 A007318^(-1) * [4*A007318^(2) - 3*A000012]. 1
1, 4, 1, 4, 11, 1, 4, 9, 18, 1, 4, 19, 15, 25, 1, 4, 17, 52, 22, 32, 1, 4, 27, 45, 110, 30, 39, 1, 4, 25, 102, 95, 200, 39, 46, 1, 4, 35, 91, 287, 175, 329, 49, 53, 1, 4, 33, 168, 252, 672, 294, 504, 60, 60, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A132479: (1, 5, 16, 32, 64, 128, 256,...).

LINKS

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

FORMULA

Inverse binomial transform of [4*A007318^(2) - 3*A000012], as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

4, 1;

4, 11, 1;

4, 9, 18, 1;

4, 19, 15, 25, 1;

4, 17, 52, 22, 32, 1;

4, 27, 45, 110, 30, 39, 1;

...

CROSSREFS

Cf. A007318, A132479.

Sequence in context: A208527 A209576 A055886 * A208918 A228782 A205125

Adjacent sequences:  A132475 A132476 A132477 * A132479 A132480 A132481

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 23 2007

STATUS

approved

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Last modified September 24 03:26 EDT 2021. Contains 347623 sequences. (Running on oeis4.)