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A067421
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Sixth column of triangle A067417.
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4
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1, 8, 144, 2592, 46656, 839808, 15116544, 272097792, 4897760256, 88159684608, 1586874322944, 28563737812992, 514147280633856, 9254651051409408, 166583718925369344, 2998506940656648192
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 8*(3*6)^(n-1), n >= 1, a(0)=1.
G.f.: (1-10*x)/(1-18*x).
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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