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 A045825 #8 Mar 08 2020 22:49:04 %S A045825 8,64,224,512,1008,1792,2752,4096,6056,8064,10656,14336,17584,22016, %T A045825 28224,32768,39312,48448,54880,64512,77056,85248,97344,114688,126008, %U A045825 140672,163520,176128,195120,225792,238336,262144,298368,314496 %N A045825 a(n) = A004017(n)/2. %Y A045825 Cf. A004017. %K A045825 nonn %O A045825 1,1 %A A045825 _N. J. A. Sloane_