This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A370856 #9 Mar 09 2024 11:20:59 %S A370856 2,5,7,8,11,15,17,19,21,23,25,26,35,44,47,50,51,52,53,59,61,65,68,69, %T A370856 70,71,73,75,76,77,79,80,98,104,106,107,116,128,132,134,140,142,143, %U A370856 146,150,152,154,155,156,158,159,160,161,176,178,179,184,185,187 %N A370856 Numbers m such that c(0) <= c(1) <= c(2), where c(k) = number of k's in the ternary representation of m. %e A370856 The ternary representation of 15 is 120, for which c(0)=1 <= c(1)=1 < c(2)=1. So 15 is in the sequence. %t A370856 Select[Range[1000], DigitCount[#, 3, 0] <= DigitCount[#, 3, 1] <= DigitCount[#, 3, 2] &] %Y A370856 Cf. A007089, A370853, A370854, A370855. %K A370856 nonn,base %O A370856 1,1 %A A370856 _Clark Kimberling_, Mar 03 2024