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.

A122985 Smallest composite number greater than n, relatively prime to n, such that a(n)-n is also composite.

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%I A122985 #4 Jul 26 2019 16:34:37
%S A122985 9,27,25,25,9,55,15,33,25,49,15,77,21,39,49,25,21,95,25,69,25,49,27,
%T A122985 49,33,35,35,55,33,121,35,57,49,49,39,85,45,63,49,49,45,185,49,65,49,
%U A122985 55,51,125,55,77,55,77,57,119,63,65,65,85,63,203,65,77,85,85,69,91,75,77,77
%N A122985 Smallest composite number greater than n, relatively prime to n, such that a(n)-n is also composite.
%t A122985 scn[n_]:=Module[{k=n+1},While[!CompositeQ[k]||!CoprimeQ[n,k] || !CompositeQ[ k-n],k++];k]; Array[scn,70] (* _Harvey P. Dale_, Jul 26 2019 *)
%Y A122985 Equals A122984(n) + n. Cf. A096076.
%K A122985 easy,nonn
%O A122985 1,1
%A A122985 _Franklin T. Adams-Watters_, Sep 22 2006