%I #3 Mar 30 2012 17:37:42
%S 15,27,39,130,131,252,370,489,1195,2345,3484,4619,5752,6879
%N Numbers n such that for some k there exist k numbers a1,a2, ...,ak that concatenations of them is equal to n and sum of them is equal to Pi(n).
%e 9642459 is in the sequence because Pi(9642459)=9+642459
%e in fact a1=9 & a2=642459.
%Y Cf. A097220, A097221.
%K nonn,base
%O 1,1
%A _Farideh Firoozbakht_, Aug 05 2004
