The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #16 May 21 2023 12:25:38
%S 85,277,325,337,340,342,345,357,405,597,1045,1093,1105,1108,1110,1113,
%T 1125,1173,1285,1297,1300,1302,1305,1317,1345,1348,1350,1353,1360,
%U 1362,1368,1370,1377,1380,1382,1385,1413,1425,1428
%N Numbers whose base-4 representation contains exactly four 1's and no 3's.
%t Select[Range[1500],DigitCount[#,4,1]==4&&DigitCount[#,4,3]==0&] (* _Harvey P. Dale_, May 06 2011 *)
%Y Cf. A007090.
%K nonn,base
%O 1,1
%A _Clark Kimberling_