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 A366770 #10 Feb 25 2024 02:17:02 %S A366770 0,0,1,1,1,2,1,2,3,2,1,4,1,2,3,3,1,5,1,5,3,3,1,6,3,2,5,5,2,6,1,4,4,2, %T A366770 4,9,2,2,3,7,2,7,1,6,6,3,2,9,2,6,5,6,2,8,5,7,4,5,3,12,1,2,6,6,5,8,2,6, %U A366770 4,8,2,13,2,4,6,6,5,7,1,9,9,4,5,13,3,4 %N A366770 Number of prime factors of A001045(n) (Jacobsthal numbers) (counted with multiplicity). %H A366770 Amiram Eldar, <a href="/A366770/b366770.txt">Table of n, a(n) for n = 1..1122</a> %F A366770 a(n) = bigomega(Jacobsthal(n)) = A001222(A001045(n)). %e A366770 a(9) = 3 because Jacobsthal(9) = 171 = 3^2 * 19. %Y A366770 Cf. A001045, A001222, A366769, A366771, A038575. %K A366770 nonn %O A366770 1,6 %A A366770 _Sean A. Irvine_, Oct 21 2023