OFFSET
1,3
COMMENTS
Most of the values are conjectural. So far not much is proved about the function A247889. - M. F. Hasler and Robert Israel, May 18 2017
LINKS
Hans Havermann, Table of n, a(n) for n = 1..3600
Hans Havermann, Solutions (k) for the terms (n <= 20034) of this sequence
EXAMPLE
18^3 = 5832 and 5 + 8 + 3 + 2 = 18 (also 18^6 = 34012224 and 18^7 = 612220032).
Again 46^5 = 205962976 and 2 + 0 + 5 + 9 + 6 + 2 + 9 + 7 + 6 = 46.
PROG
(PARI) select(A247889, [0..170]) \\ M. F. Hasler, May 18 2017
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Paolo P. Lava and Giorgio Balzarotti, Oct 27 2006
EXTENSIONS
Prepended a(1) = 0, offset corrected and more terms added by Derek Orr, Sep 25 2014
Edited by M. F. Hasler, May 18 2017
STATUS
approved