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A135234
Numbers n such that n = s^pi(s) where s is sum of its digits.
3
1, 2, 2401, 612220032
OFFSET
1,2
EXAMPLE
612220032 = (6+1+2+2+2+0+0+3+2)^pi(6+1+2+2+2+0+0+3+2), so 612220032 is in the sequence.
CROSSREFS
KEYWORD
fini,full,nonn,base
AUTHOR
Farideh Firoozbakht, Nov 24 2007
STATUS
approved