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 A045679 #21 Aug 11 2020 10:14:29 %S A045679 13,21,37,45,48,61,69,85,93,109,117,120,132,133,141,157,165,181,189, %T A045679 205,208,213,229,237,241,252,253,261,277,285,300,301,309,325,328,333, %U A045679 340,349,357,360,373,381,397,405,421,429,445,453,468,469,477 %N A045679 Numbers congruent to 0,1,4,9 mod 12 missing from A045673 (conjectured to be finite). %Y A045679 Cf. A042944, A042945, A042946, A045674, A112652. %K A045679 nonn %O A045679 1,1 %A A045679 _Allan Wilks_ %E A045679 Offset 1 and name corrected by _Michel Marcus_, Sep 13 2019