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 A366207 #15 Oct 06 2023 11:01:08 %S A366207 1,11,20,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115, %T A366207 116,117,118,119,120,121,130,131,140,141,150,151,160,161,170,171,180, %U A366207 181,190,191,201,210,211,301,310,311,401,410,411,501,510,511,601,610,611,701 %N A366207 Numbers whose median of the digits is equal to 1. %e A366207 20 is a term since the median of the digits 0 and 2 is (0+2)/2 = 1; %e A366207 102 is a term since the median of the digits 0, 1, and 2 is 1. %t A366207 Select[Range[0,701], Median[IntegerDigits[#]]==1&] %Y A366207 Cf. A292730 (median = 0), A292739 (median = 9), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366213 (median = 7), A366214 (median = 8). %K A366207 nonn,base,easy %O A366207 1,2 %A A366207 _Stefano Spezia_, Oct 04 2023