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 A175194 #12 Apr 07 2025 13:40:36 %S A175194 1,2,2,6,2,6,2,24,6,2,6,6,2,24,6,6,2,6,6,2,6,24,6,24,6,2,6,2,120,24, %T A175194 24,6,2,24,2,6,6,120,6,6,2,362880,2,6,2,24,120,6,2,120,6,2,5040,6,6,6, %U A175194 2,6,6,2,24,24,6,2,24,40320,6,120,2,24,6,24,6,6,120,6,120,24,120,24,2,120,2 %N A175194 a(n) = the smallest factorial such that (the n-th prime)+a(n) is prime, or -1 if no such prime exists. %C A175194 a(n) = A175193(n)!. %F A175194 A092789(n) = A000040(n) + a(n). %Y A175194 Cf. A082470, A092789, A175193. %K A175194 nonn %O A175194 1,2 %A A175194 _Leroy Quet_, Mar 01 2010 %E A175194 Extended by _Ray Chandler_, Mar 04 2010