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.
%I A265301 #6 Dec 18 2015 11:35:45 %S A265301 5,1,0,2,5,7,7,4,8,2,8,4,4,7,5,3,6,6,8,7,0,9,7,4,1,8,6,1,6,4,1,0,1,0, %T A265301 5,9,5,6,1,6,0,0,2,0,2,9,8,4,0,3,7,1,6,6,0,9,9,6,8,0,9,4,1,3,0,5,2,4, %U A265301 6,3,3,9,0,6,3,0,8,4,9,6,2,8,1,7,3,5 %N A265301 Decimal expansion of Sum_{k>=1} c(2k), where c = convergents to (x = sqrt(6)). %e A265301 sum = 0.0510257748284475366870974186164101059561600202984037166... %t A265301 x = Sqrt[6]; z = 600; c = Convergents[x, z]; %t A265301 s1 = Sum[x - c[[2 k - 1]], {k, 1, z/2}]; N[s1, 200] %t A265301 s2 = Sum[c[[2 k]] - x, {k, 1, z/2}]; N[s2, 200] %t A265301 N[s1 + s2, 200] %t A265301 RealDigits[s1, 10, 120][[1]] (* A265300 *) %t A265301 RealDigits[s2, 10, 120][[1]] (* A265301 *) %t A265301 RealDigits[s1 + s2, 10, 120][[1]](* A265302 *) %Y A265301 Cf. A010464, A265300, A265302, A265288 (guide). %K A265301 nonn,cons %O A265301 0,1 %A A265301 _Clark Kimberling_, Dec 13 2015