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 A068957 #8 Feb 06 2020 08:18:46
%S A068957 1,1,1,2,2,1,4,6,3,1,3,2,4,3,2,1,2,3,4,2,2,3,3,4,9,4,2,2,5,4,6,3,6,4,
%T A068957 4,2,6,7,6,4,3,4,8,6,2,7,4,7,12,6,4,5,5,7,9,5,5,6,2,5,10,4,6,5,5,3,9,
%U A068957 4,4,2,3,4,9,4,6,4,5,7,9,13,8,4,2,5,7
%N A068957 Number of prime divisors of n^n - (n-1)^(n-1), counted with multiplicity.
%F A068957 a(n) = A001222(A007781(n)).
%e A068957 A007781(14) = 10809131718965763 = 3 * 61^2 * 968299894201, therefore a(14) = 4.
%t A068957 Table[ Apply[ Plus, Transpose[ FactorInteger[n^n - (n - 1)^(n - 1)]] [[ -1]]], {n, 2, 52}]
%Y A068957 Cf. A001222, A007781, A068956.
%K A068957 nonn
%O A068957 2,4
%A A068957 _Reinhard Zumkeller_, Mar 11 2002
%E A068957 Edited and extended by _Robert G. Wilson v_, Mar 15 2002
%E A068957 a(53)-a(86) from _Amiram Eldar_, Feb 06 2020