%I #5 Oct 02 2012 18:28:53
%S 14,492,1052,1056,2116,16314,261818,262184,1047920,1048207
%N Numbers n that are the signed sum of powers of 2 whose exponents concatenated form n itself.
%e 14 = 2^1 + 2^4, 492 = 2^4 + 2^9  2^2, 1052 = 2^10 + 2^5  2^2, 1056 = 2^10  2^5 + 2^6, 2116 = 2^2 + 2^11 + 2^6, etc.
%e 1048207 is in the sequence since 1048207 = 2^1 + 2^0 + 2^4  2^8 + 2^20  2^7 and the exponents are 1, 0, 4, 8, 20, 7.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Oct 01 2012
