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A135208
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a(n)=Sum_digits{C(n,Sum_digits[a(n-1)]}, with a(0)=1.
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0
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1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 12, 16, 12, 14, 21, 14, 27, 29, 29, 24, 21, 16, 18, 29, 29, 36, 30, 18, 21, 22, 23, 24, 25, 26, 18, 22, 24, 24, 33, 42, 37, 46, 50, 27, 23, 33, 21, 19, 37, 48, 52, 26, 36, 33, 36, 60, 36, 42, 28, 42, 37, 36, 43, 42, 51, 60, 33, 46, 49, 64, 45
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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MAPLE
| P:=proc(n) local a, i, k, w; a:=1; 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; k:=binomial(i, w); w:=0; while k>0 do w:=w+k-(trunc(k/10)*10); k:=trunc(k/10); od; a:=w; print(w); od; end: P(100);
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CROSSREFS
| Cf. A128936, A129630, A129631, A130843.
Sequence in context: A114570 A115026 A101337 * A156207 A061486 A138470
Adjacent sequences: A135205 A135206 A135207 * A135209 A135210 A135211
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KEYWORD
| easy,nonn
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AUTHOR
| Paolo P. Lava (paoloplava(AT)gmail.com), Dec 03 2007
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