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 A379225 #10 Dec 20 2024 16:11:55 %S A379225 0,1,2,2,0,3,3,3,4,1,4,4,3,4,2,4,2,0,1,2,0,0,2,0,0,4,1,0,4,3,4,0,1,3, %T A379225 3,1,2,2,0,3,1,1,2,1,4,3,3,1,1,1,4,0,3,2,4,1,3,0,1,4,1,0,2,1,3,2,3,4, %U A379225 4,4,4,2,3,3,2,3,2,1,1,4,3,2,2,2,2,3,1,2,4,0,1,4,1,4,1,2,2,2,3,2,1,0,2,1,0 %N A379225 a(n) = A113177(n) mod 5, where A113177 is fully additive with a(p) = Fibonacci(p). %H A379225 Antti Karttunen, <a href="/A379225/b379225.txt">Table of n, a(n) for n = 1..81839</a> %F A379225 a(n) = A010874(A113177(n)) = A010874(A374124(n)). %o A379225 (PARI) %o A379225 A113177(n) = if(n<=1, 0, my(f=factor(n)); sum(i=1, #f~, f[i, 2]*fibonacci(f[i, 1]))); %o A379225 A379225(n) = (A113177(n)%5); %Y A379225 Cf. A000045, A030426, A010874, A082116, A113177, A374208, A374124, A379226 (positions of 0's), A379227. %Y A379225 Cf. also A379115. %K A379225 nonn %O A379225 1,3 %A A379225 _Antti Karttunen_, Dec 20 2024