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Search: id:A000304
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A000304 a(n) = a(n-1) a(n-2). +0
3
2, 3, 6, 18, 108, 1944, 209952, 408146688, 85691213438976, 34974584955819144511488, 2997014624388697307377363936018956288 (list; graph; listen)
OFFSET

2,1

FORMULA

For n>=4, a(n) = 2^A000045(n-3)*3^A000045(n-2) - Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 26 2003

MAPLE

A000304 := proc(n) option remember; if n <=3 then n else A000304(n-1)*A000304(n-2); fi; end;

CROSSREFS

Adjacent sequences: A000301 A000302 A000303 this_sequence A000305 A000306 A000307

Sequence in context: A038056 A072241 A093468 this_sequence A000614 A018290 A121959

KEYWORD

nonn

AUTHOR

njas

page 1

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Last modified May 14 01:44 EDT 2008. Contains 139663 sequences.


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