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 A372714 #6 May 11 2024 09:40:38 %S A372714 2,2,4,2,4,2,6,2,4,2,6,4,4,2,6,2,6,2,8,2,4,4,6,2,4,4,10,2,4,2,6,4,6,2, %T A372714 8,2,8,2,6,4,4,4,8,2,4,2,12,4,4,2,8,4,4,4,6,2,8,2,10,2,8,4,6,2,4,2,12, %U A372714 4,4,4,6,4,4,4,12,2,8,2,6,2,6,6,8,2,4,2 %N A372714 a(n) = tau(3*n-1) = A000005(3*n-1). %F A372714 Sum_{k=1..n} a(k) ~ 2*n * (log(n) + 2*gamma - 1 + 2*log(3)) / 3, where gamma is the Euler-Mascheroni constant A001620. %t A372714 Table[DivisorSigma[0, 3*n-1], {n, 1, 150}] %Y A372714 Cf. A372713, A372715. %Y A372714 Cf. A000005, A099777, A099774. %K A372714 nonn %O A372714 1,1 %A A372714 _Vaclav Kotesovec_, May 11 2024