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 A387144 #12 Aug 21 2025 15:19:49 %S A387144 3,2,2,3,3,2,3,3,2,3,2,3483,3,2,2,2343,8,2,3,420,2,23,2,65,3,15,2,724, %T A387144 2,33,15 %N A387144 a(n) is the least k>1 such that omega(k^n-1) = omega(k^n+1) with omega = A001221. %C A387144 a(32)...a(39): >1000, 2, 5, 8, >1000, 4, 8, 7. %o A387144 (PARI) a387144(n) = for(k=2, oo, if(omega(k^n-1)==omega(k^n+1), return(k))) %Y A387144 Cf. A001221, A387145. %K A387144 nonn,more,hard,changed %O A387144 1,1 %A A387144 _Hugo Pfoertner_, Aug 18 2025