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 A085030 #7 May 06 2022 12:46:46
%S A085030 2,2,1,2,2,2,1,2,2,1,1,1,1,2,2,3,2,2,3,2,2,3,2,1,4,2,4,1,3,2,2,3,2,2,
%T A085030 4,2,3,3,2,2,2,4,2,2,3,2,1,1,1,2,3,3,3,4,5,1,1,2,2,2,3,3,3,4,3,2,5,4,
%U A085030 4,2,2,3,3,3,5,2,3,2,3,2,2,4,3,2,3,4,3,1,6,1,2,1,4,3,4,2,3,3,4,3
%N A085030 Number of prime factors of cyclotomic(n,5), which is A019323(n), the value of the n-th cyclotomic polynomial evaluated at x=5.
%C A085030 The Mobius transform of this sequence yields A057956, number of prime factors of 5^n-1.
%D A085030 See references at A085021
%H A085030 Max Alekseyev, <a href="/A085030/b085030.txt">Table of n, a(n) for n = 1..502</a>
%t A085030 Table[Plus@@Transpose[FactorInteger[Cyclotomic[n, 5]]][[2]], {n, 1, 100}]
%Y A085030 omega(Phi(n,x)): A085021 (x=2), A085028 (x=3), A085029 (x=4), this sequence (x=5), A085031 (x=6), A085032 (x=7), A085033 (x=8), A085034 (x=9), A085035 (x=10).
%Y A085030 Cf. A019323, A057956, A059887, A074479.
%K A085030 nonn
%O A085030 1,1
%A A085030 _T. D. Noe_, Jun 19 2003