A135237 Numbers n such that n=s^pi(pi(s)) where s is sum of its digits.

1, 3, 4, 81, 234256, 390625, 614656, 52521875, 60466176, 8303765625, 24794911296, 480682838924478847449

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Example

24794911296=(2+4+7+9+4+9+1+1+2+9+6)^pi(pi(2+4+7+9+4+9+1+1+2+9+6)) so 24794911296 is in the sequence.

Crossrefs

Cf. A135234, A135235, A135236.

Sequence in context: A041171 A279935 A111799 * A316197 A041253 A297119

Adjacent sequences: A135234 A135235 A135236 * A135238 A135239 A135240

Keyword

base,fini,full,nonn

Author

Farideh Firoozbakht, Nov 24 2007

Status

approved