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 A377672 #10 Nov 04 2024 01:36:10 %S A377672 2,4,8,12,8,32,48,48,12,128,16,24,16,256,64,80,32,96,1536,96,64,1024, %T A377672 64,96,96,512,512,3072,64,128,2048,384,128,8192,128,1152,256,128,32, %U A377672 2048,128,128,6144,288,768,262144,64,480,1536,1536,2048,3072,1024,1024 %N A377672 a(n) is the number of divisors of n^n + n. %H A377672 Amiram Eldar, <a href="/A377672/b377672.txt">Table of n, a(n) for n = 1..116</a> %F A377672 a(n) = A000005(A066068(n)). %t A377672 a[n_] := DivisorSigma[0, n^n + n]; Array[a, 45] (* _Amiram Eldar_, Nov 04 2024 *) %o A377672 (PARI) a(n) = numdiv(n^n+n); %Y A377672 Cf. A000005, A066068, A344859, A372228, A372546, A377671, A377673, A377674. %K A377672 nonn %O A377672 1,1 %A A377672 _Sean A. Irvine_, Nov 03 2024