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Search: id:A051607
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A051607 (3*n+7)!!!/7!!!, related to A007559(n+1) ((3*n+1)!!! triple factorials). +0
1
1, 10, 130, 2080, 39520, 869440, 21736000, 608608000, 18866848000, 641472832000, 23734494784000, 949379791360000, 40823331028480000, 1877873227310080000, 92015788138193920000, 4784820983186083840000 (list; graph; listen)
OFFSET

0,2

COMMENT

Row m=7 of the array A(4; m,n) := ((3*n+m)(!^3))/m(!^3), m >= 0, n >= 0.

FORMULA

a(n) = ((3*n+7)(!^3))/7(!^3); e.g.f.: 1/(1-3*x)^(10/3).

CROSSREFS

Cf. A032031, A007559(n+1), A034000(n+1), A034001(n+1), A051604-A051609 (rows m=0..9).

Sequence in context: A054050 A067313 A104130 this_sequence A113386 A066156 A048666

Adjacent sequences: A051604 A051605 A051606 this_sequence A051608 A051609 A051610

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.


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