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A013620 Triangle of coefficients in expansion of (2+3x)^n. +0
5
1, 2, 3, 4, 12, 9, 8, 36, 54, 27, 16, 96, 216, 216, 81, 32, 240, 720, 1080, 810, 243, 64, 576, 2160, 4320, 4860, 2916, 729, 128, 1344, 6048, 15120, 22680, 20412, 10206, 2187, 256, 3072, 16128, 48384, 90720, 108864, 81648, 34992, 6561, 512 (list; table; graph; listen)
OFFSET

0,2

COMMENT

Row sums give A000351; central terms give A119309. - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 14 2006

LINKS

Index entries for triangles and arrays related to Pascal's triangle

FORMULA

G.f.: 1 / [1 - x(2+3y)].

T(n,k) = A007318(n,k) * A036561(n,k). - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 14 2006

CROSSREFS

Cf. A038220, A000079, A000244, A013613.

Sequence in context: A116054 A099527 A096864 this_sequence A119799 A036779 A037339

Adjacent sequences: A013617 A013618 A013619 this_sequence A013621 A013622 A013623

KEYWORD

tabl,nonn,easy

AUTHOR

njas

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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