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 A257936 #29 Aug 05 2024 10:11:28
%S A257936 6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%T A257936 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%U A257936 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
%N A257936 Decimal expansion of 11/18.
%C A257936 Decimal expansion of Sum_{i>=1} 1/A028552(i).
%C A257936 Also, continued fraction expansion of 5+A001622.
%H A257936 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1).
%F A257936 Equals A020773 + A142464.
%F A257936 From _Elmo R. Oliveira_, Aug 05 2024: (Start)
%F A257936 G.f.: (6-5*x)/(1-x).
%F A257936 E.g.f.: exp(x) + 5.
%F A257936 a(n) = 1, n >= 1. (End)
%e A257936 .6111111111111111111111111111111111111111111111111111111111111111...
%t A257936 RealDigits[11/18, 10, 90][[1]]
%o A257936 (Magma) [6,1^^90];
%o A257936 (PARI) 11/18. \\ _Charles R Greathouse IV_, Apr 18 2016
%Y A257936 Cf. A028552, A030880.
%Y A257936 Cf. A010716 (decimal expansion of 5/9 = 10/18), A010722 (decimal expansion of 2/3 = 12/18).
%K A257936 nonn,cons,easy
%O A257936 0,1
%A A257936 _Bruno Berselli_, May 13 2015