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 A349830 #13 Jan 08 2022 13:42:49 %S A349830 0,2,5,7,9,10,11,12,14,16,17,19,22,24,26,27,28,29,31,33,34,36,38,40, %T A349830 41,43,44,45,49,50,53,55,57,58,60,61,62,65,66,67,68,69,70,72,74,75,76, %U A349830 77,79,81,82,84,87,89,91,92,93,94,96,98,99,101,103,105,106,108,109,110,114,115,118,120,122,123 %N A349830 Intersection of A228082 and A349829. %C A349830 Numbers that are "generated" (in Kaprekar's sense) in both bases 2 and 4. %Y A349830 Cf. A228082, A349829. %Y A349830 A230624 is a subsequence. %K A349830 nonn,base %O A349830 1,2 %A A349830 _N. J. A. Sloane_, Jan 07 2022