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Search: id:A047902
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| A047902 |
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a(n+1) = a(n) * sum of digits of a(n). |
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+0
3
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| 11, 22, 88, 1408, 18304, 292864, 9078784, 390387712, 15615508480, 671466864640, 38945078149120, 2375649767096320, 180549382299320320, 12638456760952422400, 960522713832384102400, 67236589968266887168000
(list; graph; listen)
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OFFSET
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11,1
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MAPLE
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P:=proc(n) local a, i, k, w; a:=11; print(a); for i from 1 by 1 to n do w:=0; k:=a; while k>0 do w:=w+k-(trunc(k/10)*10); k:=trunc(k/10); od; a:=a*w; print(a); od; end: P(1000); - Paolo P. Lava (ppl(AT)spl.at), Apr 27 2007
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CROSSREFS
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Cf. A047892.
Sequence in context: A070069 A109687 A111696 this_sequence A081930 A034708 A091784
Adjacent sequences: A047899 A047900 A047901 this_sequence A047903 A047904 A047905
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KEYWORD
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easy,nonn,base
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AUTHOR
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Miklos SZABO (mike(AT)ludens.elte.hu)
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