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 A263131 Ordinal transform of the multiplicative persistence A031346. 2
 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 16, 17, 18, 19, 6, 7, 8, 9, 10, 1, 20, 21, 22, 11, 12, 13, 14, 2, 15, 3, 23, 24, 16, 17, 18, 4, 19, 5, 20, 6, 25, 26, 21, 22, 23, 24, 7, 25, 8, 9, 27, 28, 26, 27 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS n is the a(n)-th nonnegative integer having its multiplicative persistence. LINKS Alois P. Heinz, Table of n, a(n) for n = 0..20000 Eric Weisstein's World of Mathematics, Multiplicative Persistence MAPLE m:= n-> mul(i, i=convert(n, base, 10)): p:= n-> `if`(n<10, 0, 1+p(m(n))): b:= proc() 0 end: a:= proc(n) option remember; local t; t:= p(n); b(t):= b(t)+1 end: seq(a(n), n=0..100); CROSSREFS Cf. A031346. Sequence in context: A214587 A010889 A053831 * A349315 A274206 A214949 Adjacent sequences: A263128 A263129 A263130 * A263132 A263133 A263134 KEYWORD nonn,look,base AUTHOR Alois P. Heinz, Oct 10 2015 STATUS approved

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Last modified January 30 12:56 EST 2023. Contains 359945 sequences. (Running on oeis4.)