%I
%S 0,0,0,13,23,46,53,140,215,105,210,2808,2918,15593,21187,63556,7987,
%T 179118,358137,466945,420750,4034914,8068838,10946113,23445533,
%U 46880176,22406063,117663950,219078635,1060248229,2021396468,2632727628
%N a(n)=Mod[reversed(2^n),2^n], remainder if backwardwritten2^n is divided by 2^n.
%t Table[Mod[FromDigits[Reverse[IntegerDigits[2^n]]], 2^n], {n, 1, 256}]
%Y Cf. A002113, A071590, A103164A103167.
%K base,nonn
%O 1,4
%A _Labos Elemer_, Jan 28 2005
