cp's OEIS Frontend

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.

A295632 Write 1/Product_{n > 1}(1 - 1/n^s) in the form Product_{n > 1}(1 + a(n)/n^s).

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%I A295632 #6 Dec 19 2017 02:37:47
%S A295632 1,1,2,1,1,1,1,2,1,1,1,1,1,1,4,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,
%T A295632 2,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,
%U A295632 1,1,1,1,1,1,1,1,1,1,1,4,1,1,1,1,1,1,1
%N A295632 Write 1/Product_{n > 1}(1 - 1/n^s) in the form Product_{n > 1}(1 + a(n)/n^s).
%C A295632 First negative entry is a(1024) = -4.
%t A295632 nn=100;
%t A295632 facs[n_]:=If[n<=1,{{}},Join@@Table[Map[Prepend[#,d]&,Select[facs[n/d],Min@@#>=d&]],{d,Rest[Divisors[n]]}]];
%t A295632 Solve[Table[Length[facs[n]]==Sum[Times@@a/@f,{f,Select[facs[n],UnsameQ@@#&]}],{n,2,nn}],Table[a[n],{n,2,nn}]][[1,All,2]]
%Y A295632 Cf. A001055, A045778, A050376, A220418, A220420, A273866, A273873, A289501, A290261, A290262, A290971, A290973, A295279, A295635, A295636.
%K A295632 sign
%O A295632 2,3
%A A295632 _Gus Wiseman_, Nov 24 2017