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A256242
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Numbers having digits in nondecreasing order and repeatedly setting n := A066308(n) yields a constant nonzero n.
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1
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1, 89, 135, 139, 144, 233, 1224, 1367, 11249, 12222, 111126, 111266, 111338, 112229, 112337, 1111119, 1111134, 1111137, 1111177, 1111333, 1111346, 11111117, 11111119, 11111223, 11112236, 111111119, 111111139, 111111299, 111112334, 1111111169, 1111122233, 11111111118, 11111111133, 11111111369, 111111111133
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OFFSET
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1,2
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COMMENTS
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Permutations of all numbers of the elements in the table give the first 56622402 elements from A256240 (unsorted).
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LINKS
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PROG
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(PARI) isok(n) = {d = digits(n); if (vecsort(d, , 2) == d, ok = 1; while (ok, newn = sum(k=1, #d, d[k])*prod(k=1, #d, d[k]); if (! newn, return (0)); if (newn == n, return (1)); n = newn; d = digits(n); ); ); } \\ Michel Marcus, Mar 27 2015
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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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