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 A095992 a(1) = 30; for n > 1, a(n+1) = a(n) + {product of nonzero digits of a(n)}. 0
 30, 33, 42, 50, 55, 80, 88, 152, 162, 174, 202, 206, 218, 234, 258, 338, 410, 414, 430, 442, 474, 586, 826, 922, 958, 1318, 1342, 1366, 1474, 1586, 1826, 1922, 1958, 2318, 2366, 2582, 2742, 2854, 3174, 3258, 3498, 4362, 4506, 4626, 4914, 5058, 5258, 5658 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES From a puzzle; explanation found by Pierre Roger. LINKS Table of n, a(n) for n=1..48. Frank Rubin, Number Series MATHEMATICA a[1] = 30; a[n_] := a[n] = Block[{s = Sort[ IntegerDigits[a[n - 1]]]}, While[ s[[1]] == 0, s = Drop[s, 1]]; a[n - 1] + Times @@ s]; Table[ a[n], {n, 50}] nxt[n_] := n+Times@@Select[IntegerDigits[n], #>0&]; NestList[nxt, 30, 50] (* Harvey P. Dale, Jan 08 2011 *) CROSSREFS Cf. A063108, A096347, A096972, A063108, A063425, A096922, A096923, A096924, A096925, A096926, A096927, A096928, A096929, A096930, A096931, A096973, A096987. Sequence in context: A095471 A095465 A295693 * A061842 A109226 A218114 Adjacent sequences: A095989 A095990 A095991 * A095993 A095994 A095995 KEYWORD nonn,base,easy AUTHOR Julien Piquet (julipiquet(AT)yahoo.fr), Jul 18 2004 EXTENSIONS The proposer suggests that this web site may contain other sequences also. Edited and extended by Robert G. Wilson v and Klaus Brockhaus, Jul 20 2004 STATUS approved

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Last modified April 19 10:38 EDT 2024. Contains 371791 sequences. (Running on oeis4.)