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Search: id:A067419
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A067419 Fourth column of triangle A067417. +0
5
1, 6, 72, 864, 10368, 124416, 1492992, 17915904, 214990848, 2579890176, 30958682112, 371504185344, 4458050224128, 53496602689536, 641959232274432, 7703510787293184, 92442129447518208, 1109305553370218496 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)= A067417(n+3, 3). a(n)= 6*(3*4)^(n-1), n>=1, a(0)=1.

G.f.: (1-6x)/(1-12*x).

CROSSREFS

Cf. A067403 (third column), A067420 (fifth column), A001021 (powers of 12).

Sequence in context: A099673 A105928 A007031 this_sequence A113331 A156128 A052678

Adjacent sequences: A067416 A067417 A067418 this_sequence A067420 A067421 A067422

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Jan 25 2002

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Last modified December 16 13:01 EST 2009. Contains 170825 sequences.


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