The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #6 Nov 21 2013 12:49:07
%S 1,4,46,61,652,4201,6904,48361,63556,441262,4034914,6758401,46880176,
%T 61277761,654534862,4281473701,6927694924,48196897171,63767491786,
%U 449609778472,4011156408934,6777261159901,46677144786307,61444068129571
%N Powers of 4 written backwards and sorted.
%t Sort[FromDigits[Reverse[IntegerDigits[#]]]&/@(4^Range[0,25])] (* _Harvey P. Dale_, Feb 22 2011 *)
%K base,easy,nonn
%O 1,2
%A _Jonathan Vos Post_, Oct 08 2007