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 A080315 #5 Jan 11 2024 10:53:43 %S A080315 1,28,460,496,7372,7408,8128,7948,7984,117964,118000,118720,118540, %T A080315 118576,130060,130096,130240,127180,127216,130816,127936,127756, %U A080315 127792,1887436,1887472,1888192,1888012,1888048,1899532,1899568,1899712 %N A080315 a(n) = A080313(n)/2. %Y A080315 Cf. A080316, A080317. %K A080315 nonn %O A080315 0,2 %A A080315 _Antti Karttunen_, Mar 02 2003