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 A308888 #6 Jul 01 2019 22:57:17 %S A308888 17,18,22,26,27,28,32,33,38,39,45,46,52,59,60,76,101,108,118,124,128, %T A308888 130,146,153,158,159,160,166,172,174,176,184,185,186,188,189,191,192, %U A308888 193,199,206,218,236,286,292,296,298,302,326,332,333,339,344,345,350,358,364,370,372,382,383,389,390,396,397 %N A308888 Positions of 3's on the spiral defined in A308884. %Y A308888 Cf. A308884-A308895. %K A308888 nonn %O A308888 1,1 %A A308888 _N. J. A. Sloane_, Jul 01 2019