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A047899
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a(1) = 7; for n > 0, a(n+1) = a(n) * sum of digits of a(n).
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9
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7, 49, 637, 10192, 132496, 3312400, 43061200, 688979200, 33759980800, 1755519001600, 70220760064000, 2387505842176000, 138475338846208000, 9693273719234560000, 736688802661826560000, 64828614634240737280000
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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FORMULA
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PROG
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(Haskell)
a047899 n = a047899_list !! (n-1)
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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Miklos SZABO (mike(AT)ludens.elte.hu)
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STATUS
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approved
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