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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.

A106602 Number of primitive positive solutions to 8n+2=x^2+y^2.

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%I A106602 #8 Sep 21 2013 16:11:38
%S A106602 1,1,0,1,1,0,1,1,0,1,1,0,0,1,0,1,2,0,1,0,0,2,1,0,1,1,0,1,1,0,0,1,0,0,
%T A106602 1,0,2,1,0,1,0,0,1,1,0,1,2,0,1,1,0,2,0,0,0,2,0,1,1,0,1,0,0,0,1,0,2,1,
%U A106602 0,1,1,0,1,1,0
%N A106602 Number of primitive positive solutions to 8n+2=x^2+y^2.
%H A106602 R. J. Mathar, <a href="/A106602/b106602.txt">Table of n, a(n) for n = 0..1000</a>
%e A106602 a(16)=2 because we have 130=11^2+3^2=9^2+7^2. a(2)=0 because although 18=3^2+3^2, these components are not mutually prime.
%p A106602 A106602 := proc(n)
%p A106602     local a,x,y,fourn;
%p A106602     fourn := 8*n+2 ;
%p A106602     a := 0 ;
%p A106602     for x from 1 do
%p A106602         if x^2 >= fourn then
%p A106602             return a;
%p A106602         else
%p A106602             y := fourn-x^2 ;
%p A106602             if issqr(y) then
%p A106602                 y := sqrt(y) ;
%p A106602                 if y <= x and igcd(x,y) = 1 then
%p A106602                     a := a+1 ;
%p A106602                 end if;
%p A106602             end if;
%p A106602         end if:
%p A106602     end do:
%p A106602 end proc: # _R. J. Mathar_, Sep 21 2013
%Y A106602 Cf. A106594.
%K A106602 easy,nonn
%O A106602 0,17
%A A106602 _Colin Mallows_, May 10 2005