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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.

A359943 a(n) = Sum_{d|n, d-1 is cube} d.

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%I A359943 #11 Aug 09 2023 00:52:52
%S A359943 1,3,1,3,1,3,1,3,10,3,1,3,1,3,1,3,1,12,1,3,1,3,1,3,1,3,10,31,1,3,1,3,
%T A359943 1,3,1,12,1,3,1,3,1,3,1,3,10,3,1,3,1,3,1,3,1,12,1,31,1,3,1,3,1,3,10,3,
%U A359943 66,3,1,3,1,3,1,12,1,3,1,3,1,3,1,3,10,3,1,31,1,3
%N A359943 a(n) = Sum_{d|n, d-1 is cube} d.
%F A359943 G.f.: Sum_{k>=0} (k^3+1) * x^(k^3+1)/(1 - x^(k^3+1)).
%t A359943 a[n_] := DivisorSum[n, # &, IntegerQ[Surd[#-1, 3]] &]; Array[a, 100] (* _Amiram Eldar_, Aug 09 2023 *)
%o A359943 (PARI) a(n) = sumdiv(n, d, ispower(d-1, 3)*d);
%Y A359943 Cf. A001093, A113061, A359937, A359942, A359944.
%K A359943 nonn
%O A359943 1,2
%A A359943 _Seiichi Manyama_, Jan 19 2023