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 A366682 #8 Jan 04 2024 16:09:02 %S A366682 2,5,4,7,4,9,4,9,5,8,4,13,4,8,7,12,3,12,3,11,10,11,5,17,8,10,6,13,4, %T A366682 15,5,15,9,9,8,17,6,10,12,15,9,17,4,15,9,12,5,24,7,14,9,13,6,16,10,19, %U A366682 8,10,5,21,5,12,16,19,8,22,6,15,10,19,7,24,3,11,15 %N A366682 Number of prime factors of 11^n - 1 (counted with multiplicity). %H A366682 Max Alekseyev, <a href="/A366682/b366682.txt">Table of n, a(n) for n = 1..316</a> %F A366682 a(n) = bigomega(11^n-1) = A001222(A024127(n)). %t A366682 PrimeOmega[11^Range[70]-1] %o A366682 (PARI) a(n)=bigomega(11^n-1) %Y A366682 Cf. A024127, A001222, A366681, A366683, A366684, A366685, A366687. %Y A366682 Cf. A046051, A057958, A057957, A057956, A057955, A057954, A057953, A057952, A057951, A366708. %K A366682 nonn %O A366682 1,1 %A A366682 _Sean A. Irvine_, Oct 16 2023