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 A352325 #15 Mar 12 2022 16:32:28 %S A352325 1,2,5,6,8,6,10,112,104,80,40,36,2172,1414,984,384,240,70396,39400, %T A352325 22468,3696,1152,4457616,2246138,1060976,185932 %N A352325 Number of ways of placing A352241(n) nonattacking black-square queens on an n X n board. %Y A352325 Cf. A000170, A352241. %K A352325 nonn,more %O A352325 1,2 %A A352325 _Vaclav Kotesovec_, Mar 12 2022 %E A352325 a(20)-a(26) from _Martin Ehrenstein_, Mar 12 2022