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 A375605 #16 Sep 11 2024 00:57:16 %S A375605 0,0,0,0,0,0,2,1,5 %N A375605 Number of composite knots with n crossings. %C A375605 A knot is composite if and only if it can be written as the knot sum of two nontrivial knots. %F A375605 a(n) = A086825(n) - A002863(n), for all n > 0. %e A375605 For n = 6 there are totally 5 knots out of which 3 are prime, so a(6) = 5 - 3 = 2. %Y A375605 Cf. A086825, A002863. %K A375605 nonn,hard,more,bref %O A375605 0,7 %A A375605 _Jens Ahlström_, Aug 20 2024