OFFSET
0,1
LINKS
Reinhard Zumkeller and Zak Seidov, Table of n, a(n) for n = 0..10000. Terms up to a(1000) from Reinhard Zumkeller.
Code Golf StackExchange, Self-contained powers, coding challenge started Nov 28 2018.
FORMULA
n^a(n) = A104782(n).
MATHEMATICA
f[n_] := Block[{k = 2}, While[ StringPosition[ ToString[n^k], ToString[n]] == {}, k++ ]; k]; Table[ f[n], {n, 0, 87}] (* Robert G. Wilson v, May 09 2005 *)
PROG
(Haskell)
import Data.List (isInfixOf)
a045537 n = 2 + length
(takeWhile (not . ((show n) `isInfixOf`) . show) $ iterate (* n) (n^2))
-- Reinhard Zumkeller, Sep 29 2011
(PARI) a(n) = my(s = Str(n), k=2); while (#strsplit(Str(n^k), s) == 1, k++); k; \\ Michel Marcus, Jun 04 2024
CROSSREFS
KEYWORD
base,nonn
AUTHOR
STATUS
approved