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A033651
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Trajectory of 9 under map x->x + (x-with-digits-reversed).
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7
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9, 18, 99, 198, 1089, 10890, 20691, 40293, 79497, 158994, 658845, 1207701, 2284722, 4559544, 9019098, 17928207, 88211178, 175322466, 839546037, 1570191975, 7362102726, 13634115363, 49985258994, 99970517988, 188942025987, 978462275868, 1847034540747, 9317488848228
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listen;
history;
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OFFSET
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0,1
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COMMENTS
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Trajectories of 27, 36, 45, 54, 63, 72, 81, 90, ..., merge into this sequence. - Robert G. Wilson v, Dec 16 2005.
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LINKS
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MAPLE
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a:= proc(n) option remember; `if`(n=0, 9, (h-> h+ (s->
parse(cat(s[-i]$i=1..length(s))))(""||h))(a(n-1)))
end:
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MATHEMATICA
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PROG
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(Haskell)
a063051 n = a063051_list !! n
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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