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 A331079 #13 Apr 19 2024 03:14:45
%S A331079 1,2,4,6,8,10,12,16,20,22,25,28,30,34,40,43,46,49,52,58,62,64,68,76,
%T A331079 80,84,90,93,97,101,104,110,114,118,128,133,135,139,147,151,155,159,
%U A331079 162,171,177,179,184,194,200,206,212,215,219,227,235,243,247,249,255,261
%N A331079 a(n) = Sum_{i=1..n} u_2(i)*u_2(i+1), where u_2(n) = A038548(n).
%C A331079 For background references see A330570.
%H A331079 Amiram Eldar, <a href="/A331079/b331079.txt">Table of n, a(n) for n = 1..10000</a>
%t A331079 With[{s = Table[Ceiling[DivisorSigma[0, n] / 2], {n, 1, 100}]}, Accumulate[Most[s] * Rest[s]]] (* _Amiram Eldar_, Apr 19 2024 *)
%Y A331079 Cf. A038548, A330320.
%K A331079 nonn
%O A331079 1,2
%A A331079 _N. J. A. Sloane_, Jan 10 2020