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A133110 A007318 * A133109. 2
1, 1, 3, 1, 6, 4, 1, 9, 12, 5, 1, 12, 24, 20, 7, 1, 15, 40, 50, 35, 8, 1, 18, 60, 100, 105, 48, 9, 1, 21, 84, 175, 245, 168, 63, 11, 1, 24, 112, 280, 490, 448, 252, 88, 12, 1, 27, 144, 420, 88, 1008, 756, 396, 108, 13 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row sums = A100335: (1, 4, 11, 27, 64, 149,...).

LINKS

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

FORMULA

Binomial transform of A133109, as an infinite lower triangular matrix.

EXAMPLE

First few rows of the triangle are:

1;

1, 3;

1, 6, 4;

1, 9, 12, 5;

1, 12, 24, 20, 7;

1, 15, 40, 50, 35, 8;

1, 18, 60, 100, 105, 48, 9;

...

CROSSREFS

Cf. A133109, A100335.

Sequence in context: A070883 A120029 A201904 * A286158 A185915 A086270

Adjacent sequences:  A133107 A133108 A133109 * A133111 A133112 A133113

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Sep 12 2007

STATUS

approved

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Last modified September 17 10:15 EDT 2021. Contains 347478 sequences. (Running on oeis4.)