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A000304
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a(n) = a(n-1)*a(n-2).
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7
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2, 3, 6, 18, 108, 1944, 209952, 408146688, 85691213438976, 34974584955819144511488, 2997014624388697307377363936018956288, 104819342594514896999066634490728502944926883876041385836544
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,1
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COMMENTS
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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nxt[{a_, b_}]:={b, a*b}; Transpose[NestList[nxt, {2, 3}, 12]][[1]] (* Harvey P. Dale, Nov 16 2014 *)
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PROG
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(Haskell)
a000304 n = a000304_list !! (n-2)
a000304_list = 2 : 3 : zipWith (*) a000304_list (tail a000304_list)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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