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Search: id:A067421
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A067421 Sixth column of triangle A067417. +0
3
1, 8, 144, 2592, 46656, 839808, 15116544, 272097792, 4897760256, 88159684608, 1586874322944, 28563737812992, 514147280633856, 9254651051409408, 166583718925369344, 2998506940656648192 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)= A067417(n+5, 5). a(n)= 8*(3*6)^(n-1), n>=1, a(0)=1.

G.f.: (1-10*x)/(1-18*x).

CROSSREFS

Cf. A067420 (fifth column), A067422 (seventh column), A001027 (powers of 18).

Sequence in context: A065409 A061899 A134492 this_sequence A124059 A052764 A024284

Adjacent sequences: A067418 A067419 A067420 this_sequence A067422 A067423 A067424

KEYWORD

nonn,easy

AUTHOR

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

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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