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 A353714 #3 May 07 2022 15:32:29 %S A353714 1,2,3,3,5,5,6,6,6,7,7,7,7,7,7,7,11,11,11,11,13,13,13,13,13,13,15,15, %T A353714 22,22,23,23,23,23,23,23,23,23,23,27,27,28,28,28,29,29,29,29,29,29,29, %U A353714 30,30,30,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31 %N A353714 a(0)=1; for n>0, smallest missing number after A109812(n) has been calculated. %Y A353714 Cf. A109812. %K A353714 nonn %O A353714 0,2 %A A353714 _N. J. A. Sloane_, May 07 2022