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%I #12 May 16 2023 22:05:51
%S 159,171,231,531,659,671,731,759,771,779,789,794,795,797,798,809,821,
%T 834,846,851,855,857,858,861,866,909,921,981,1034,1046,1106,1131,1151,
%U 1155,1157,1158,1161,1166,1181,1206,1409,1421
%N Numbers whose base-5 representation contains exactly three 1's and one 4.
%Y Cf. A007091.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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