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 A350960 #5 Feb 06 2022 13:42:01 %S A350960 0,63,74,125,165,168,186,254,299,350,378,404,438,452,453,479,488,498, %T A350960 509,543,599,603,605,621,629,635,738,764,770,774,794,798,809,824,828, %U A350960 859,879,888,891,903,914,929,933,963,984,986,992,1085,1101,1106,1115,1131,1139,1146,1188 %N A350960 a(n) = (A006285(n)-1)/2. %Y A350960 Cf. A006285, A350959. %K A350960 nonn %O A350960 0,2 %A A350960 _N. J. A. Sloane_, Feb 06 2022