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A140170 Numbers n such that n=s^pi(d_1)+s^pi(d_2)+...+s^pi(d_k) where s is sum of its digits and d_1d_2...d_k is the decimal expansion of n. 0

%I #2 Mar 30 2012 17:37:44

%S 1,2,42,521,4624,347352

%N Numbers n such that n=s^pi(d_1)+s^pi(d_2)+...+s^pi(d_k) where s is sum of its digits and d_1d_2...d_k is the decimal expansion of n.

%e 4624=(4+6+2+4)^pi(4)+(4+6+2+4)^pi(6)+(4+6+2+4)^pi(2)+(4+6+2+4)^pi(4).

%Y Cf. A140175.

%K base,fini,full,nonn

%O 1,2

%A _Farideh Firoozbakht_, May 20 2008

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Last modified April 25 08:20 EDT 2024. Contains 371964 sequences. (Running on oeis4.)