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 A352662 #18 Mar 29 2022 05:46:52 %S A352662 0,0,0,0,0,0,0,0,0,1,1,2,6,11,49,79,245,498,1192,3798,11594 %N A352662 Number of singly symmetric characteristic solutions to the n-superqueens problem. %C A352662 Superqueens are also called amazons. They combine the moves of queen and knight. %D A352662 D. E. Knuth, The Art of Computer Programming, Section 7.2.2.3 (draft, March 2022). %e A352662 For n=10 the a(10)=1 solution is %e A352662 +---------------------+ %e A352662 | . . . A . . . . . . | %e A352662 | . . . . . . . A . . | %e A352662 | A . . . . . . . . . | %e A352662 | . . . . A . . . . . | %e A352662 | . . . . . . . . A . | %e A352662 | . A . . . . . . . . | %e A352662 | . . . . . A . . . . | %e A352662 | . . . . . . . . . A | %e A352662 | . . A . . . . . . . | %e A352662 | . . . . . . A . . . | %e A352662 +---------------------+ %Y A352662 Cf. A051223, A051224, A352661, A352663. %K A352662 nonn,more %O A352662 1,12 %A A352662 _Don Knuth_, Mar 25 2022