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 A363034 #15 Jul 06 2023 07:30:17
%S A363034 3,8,13,21,23,28,36,38,43,59,53,58,66,68,73,94,83,96,96,98,103,129,
%T A363034 113,118,126,136,133,164,156,148,156,158,163,207,173,178,186,188,193,
%U A363034 252,203,229,216,218,223,269,233,238,246,256,276,304,263,268,289,278,283,365,293,298,306,336,313,374,323
%N A363034 Sum of divisors of 5*n-2 of form 5*k+3.
%F A363034 a(n) = A284281(5*n-2).
%F A363034 G.f.: Sum_{k>0} (5*k-2) * x^k / (1 - x^(5*k-2)).
%t A363034 a[n_] := DivisorSum[5*n - 2, # &, Mod[#, 5] == 3 &]; Array[a, 100] (* _Amiram Eldar_, Jul 06 2023 *)
%o A363034 (PARI) a(n) = sumdiv(5*n-2, d, (d%5==3)*d);
%Y A363034 Cf. A363033, A363035, A363053.
%Y A363034 Cf. A284281, A359236, A363156.
%K A363034 nonn
%O A363034 1,1
%A A363034 _Seiichi Manyama_, Jul 06 2023