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 A366213 #12 Oct 06 2023 11:02:18 %S A366213 7,59,68,77,86,95,177,178,179,187,197,277,278,279,287,297,377,378,379, %T A366213 387,397,477,478,479,487,497,577,578,579,587,597,677,678,679,687,697, %U A366213 707,708,709,717,718,719,727,728,729,737,738,739,747,748,749,757,758,759 %N A366213 Numbers whose median of the digits is equal to 7. %e A366213 59 is a term since the median of the digits 5 and 9 is (5+9)/2 = 7; %e A366213 177 is a term since the median of the digits 1, 7, and 7 is 7. %t A366213 Select[Range[0,760], Median[IntegerDigits[#]]==7&] %Y A366213 Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366214 (median = 8). %K A366213 nonn,base,easy %O A366213 1,1 %A A366213 _Stefano Spezia_, Oct 04 2023