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 A016005 #20 Jan 27 2025 02:28:22 %S A016005 1,2,2,3,2,12,2,4,3,12,2,22,2,12,12,5,2,22,2,22,12,12,2,32,3,12,4,22, %T A016005 2,112,2,6,12,12,12,41,2,12,12,32,2,112,2,22,22,12,2,42,3,22,12,22,2, %U A016005 32,12,32,12,12,2,212,2,12,22,7,12,112,2,22,12,112,2,60,2,12 %N A016005 a(n) = (tau(n^9)+8)/9. %H A016005 Antti Karttunen, <a href="/A016005/b016005.txt">Table of n, a(n) for n = 1..10000</a> %t A016005 a[n_] := (DivisorSigma[0, n^9] + 8)/9; Array[a, 100] (* _Amiram Eldar_, Jan 27 2025 *) %o A016005 (PARI) A016005(n) = (numdiv(n^9)+8)/9; \\ _Antti Karttunen_, Jan 17 2017 %Y A016005 Cf. A000005, A015996, A015999, A016001, A016002, A016003, A016006, A016007, A016008, A016009, A016012. %K A016005 nonn %O A016005 1,2 %A A016005 _Robert G. Wilson v_ %E A016005 Definition corrected by _Vladeta Jovovic_, Sep 03 2005