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6-multiplicative persistence: number of iterations of "multiply 6th powers of digits" needed to reach 0 or 1.
1

%I #13 Feb 16 2025 08:32:36

%S 0,3,3,2,3,3,3,3,3,1,1,3,3,2,3,3,3,3,3,1,3,2,3,3,2,3,3,3,2,1,3,3,3,3,

%T 2,2,3,2,2,1,2,3,3,3,2,2,2,2,3,1,3,2,2,2,2,2,3,2,2,1,3,3,2,2,2,3,2,2,

%U 3,1,3,3,3,2,3,2,2,2,2,1,3,3,2,2,2,2,2,3,2,1,3,2,2,3,2,3,2,2,3

%N 6-multiplicative persistence: number of iterations of "multiply 6th powers of digits" needed to reach 0 or 1.

%H Seiichi Manyama, <a href="/A031352/b031352.txt">Table of n, a(n) for n = 1..10000</a>

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultiplicativePersistence.html">Multiplicative Persistence</a>

%K nonn,base,changed

%O 1,2

%A _Eric W. Weisstein_

%E Offset 1 from _Seiichi Manyama_, Jan 13 2020