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 A280322 #16 Jun 19 2019 05:26:59
%S A280322 1,13,34,110,74,306,339,811,804,1340,1437,2469,1725,2840,2245,4953,
%T A280322 4511,8663,5975,11191,8568,15588,9696,18380,11064,20397,17314,23105,
%U A280322 22379,31134,25387,35486,27603,48487,36645,65610,44926,66801,45749,77825,49037,93390,59942
%N A280322 Sum of the squares of the larger parts of the partitions of 2n into two squarefree parts.
%H A280322 <a href="/index/Par#part">Index entries for sequences related to partitions</a>
%F A280322 a(n) = Sum_{i=1..n} (2n-i)^2 * mu(i)^2 * mu(2n-i)^2, where mu is the Möbius function (A008683).
%F A280322 a(n) = A280316(n) - A280320(n).
%p A280322 with(numtheory): A280322:=n->add((2*n-i)^2*mobius(i)^2*mobius(2*n-i)^2, i=1..n): seq(A280322(n), n=1..100);
%Y A280322 Cf. A008683, A280226, A280316.
%K A280322 nonn,easy
%O A280322 1,2
%A A280322 _Wesley Ivan Hurt_, Dec 31 2016