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%I #5 Dec 23 2013 11:16:42
%S 1,7,94,343,1042,70861,345328,946711,1084675,70635304,942574282,
%T 3476237791,10278214831,70401098869,948270322876,3499051657474,
%U 10696503923233,702789315036232,9440197953148261,10021679266229797
%N Powers of 7 written backwards and sorted.
%t Sort[FromDigits[Reverse[IntegerDigits[#]]]&/@(7^Range[0,20])] (* _Harvey P. Dale_, Dec 23 2013 *)
%K base,easy,nonn
%O 1,2
%A _Jonathan Vos Post_, Oct 08 2007