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 A309224 #9 Jul 09 2025 04:47:35 %S A309224 1,1,0,0,2,1,1,2,2,3,5,7,8,12,14,17,21,25,31,36,43,49,58,66,75,86,96, %T A309224 109,121,136,150,167,185,202,222 %N A309224 Bisection A164733(2*n+1). %Y A309224 Cf. A099009, A164733, A309223. %K A309224 nonn,base,more %O A309224 1,5 %A A309224 _N. J. A. Sloane_, Aug 29 2019, following a suggestion from Manuj Mishra