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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.

A363035 Sum of divisors of 5*n-3 of form 5*k+3.

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%I A363035 #16 Jul 06 2023 07:30:28
%S A363035 0,0,3,0,0,3,8,0,3,0,13,3,0,0,29,0,0,3,23,0,3,0,36,16,0,0,36,0,0,3,46,
%T A363035 0,21,0,43,3,13,0,59,0,0,26,53,0,3,0,66,3,0,13,112,0,0,3,76,0,3,0,73,
%U A363035 36,0,0,102,0,23,3,83,0,59,0,96,3,0,0,96,13,0,46,134,0,3,0,103,3,0,0,185,23,13,3,113,0,36
%N A363035 Sum of divisors of 5*n-3 of form 5*k+3.
%F A363035 a(n) = A284281(5*n-3).
%F A363035 G.f.: Sum_{k>0} (5*k-2) * x^(4*k-1) / (1 - x^(5*k-2)).
%t A363035 a[n_] := DivisorSum[5*n - 3, # &, Mod[#, 5] == 3 &]; Array[a, 100] (* _Amiram Eldar_, Jul 06 2023 *)
%o A363035 (PARI) a(n) = sumdiv(5*n-3, d, (d%5==3)*d);
%Y A363035 Cf. A363033, A363034, A363053.
%Y A363035 Cf. A284281, A359270, A363157.
%K A363035 nonn
%O A363035 1,3
%A A363035 _Seiichi Manyama_, Jul 06 2023