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%I #10 Apr 24 2021 21:03:41
%S 70,151,232,313,394,475,556,574,583,592,601,610,619,628,630,631,632,
%T 633,634,635,636,638,646,718,799,880,961,1042,1123,1204,1285,1303,
%U 1312,1321,1330,1339,1348,1357,1359,1360,1361,1362,1363
%N Numbers having two 7's in base 9.
%t Select[Range[1500],DigitCount[#,9,7]==2&] (* _Harvey P. Dale_, Jan 16 2015 *)
%Y Cf. A007095.
%K nonn,base
%O 1,1
%A _Clark Kimberling_