%I #5 Mar 30 2012 18:56:39
%S 820,821,825,826,829,830,831,833,867,869,870,871,874,875,879,880,901,
%T 902,906,907,910,911,912,914,921,923,924,925,937,938,939,941,1245,
%U 1247,1248,1249,1261,1262,1263,1265,1272,1274,1275
%N Numbers n such that number of runs in the base 3 representation of n is congruent to 7 mod 10.
%K nonn,base
%O 1,1
%A _Clark Kimberling_