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 A070288 #16 May 20 2022 03:26:48
%S A070288 0,0,0,1,0,2,0,2,1,2,0,6,0,2,2,3,0,6,0,6,2,2,0,10,1,2,2,6,0,12,0,4,2,
%T A070288 2,2,14,0,2,2,10,0,12,0,6,6,2,0,14,1,6,2,6,0,10,2,10,2,2,0,26,0,2,6,5,
%U A070288 2,12,0,6,2,12,0,22,0,2,6,6,2,12,0,14,3,2,0,26,2,2,2,10,0,26,2,6,2,2,2
%N A070288 a(n) = Sum_{d|n} omega(d)*omega(n/d).
%H A070288 Antti Karttunen, <a href="/A070288/b070288.txt">Table of n, a(n) for n = 1..10000</a>
%F A070288 a(n) = Sum_{prime p|n} A062799(n/p) = Sum_{prime p|n} Sum_{prime q|(n/p)} A000005(n/p/q). - _Max Alekseyev_, Aug 11 2016
%t A070288 a[n_] := DivisorSum[n, PrimeNu[#] * PrimeNu[n/#] &]; Array[a, 100] (* _Amiram Eldar_, May 20 2022 *)
%o A070288 (PARI) for(n=1,100,print1(sumdiv(n,d,omega(n/d)*omega(d)),","))
%Y A070288 Cf. A000005, A001221, A062799.
%K A070288 easy,nonn
%O A070288 1,6
%A A070288 _Benoit Cloitre_, May 12 2002