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 A161488 #8 Sep 08 2022 08:45:45 %S A161488 1,5,3,8,4,9,6,4,0,7,0,2,8,1,9,7,3,9,7,5,2,9,3,2,6,3,0,0,7,9,8,8,5,8, %T A161488 0,3,5,1,5,2,7,7,6,5,0,5,3,5,4,0,1,5,1,0,1,5,2,1,4,7,0,0,7,4,7,6,1,4, %U A161488 8,6,6,4,2,4,4,8,8,2,9,4,3,6,2,8,8,0,7,9,8,5,3,7,1,5,4,8,9,4,9,9,2,8,8,4,8 %N A161488 Decimal expansion of (209+60*sqrt(2))/191. %C A161488 lim_{n -> infinity} b(n)/b(n-1) = (209+60*sqrt(2))/191 for n mod 3 = {1, 2}, b = A161486. %C A161488 lim_{n -> infinity} b(n)/b(n-1) = (209+60*sqrt(2))/191 for n mod 3 = {0, 2}, b = A161487. %H A161488 G. C. Greubel, <a href="/A161488/b161488.txt">Table of n, a(n) for n = 1..10000</a> %F A161488 Equals (20+3*sqrt(2))/(20-3*sqrt(2)). %e A161488 (209+60*sqrt(2))/191 = 1.53849640702819739752... %t A161488 RealDigits[(209+60*Sqrt[2])/191, 10, 100][[1]] (* _G. C. Greubel_, Apr 06 2018 *) %o A161488 (PARI) (209+60*sqrt(2))/191 \\ _G. C. Greubel_, Apr 06 2018 %o A161488 (Magma) (209 + 60*Sqrt(2))/191; // _G. C. Greubel_, Apr 06 2018 %Y A161488 Cf. A161486, A161487, A002193 (decimal expansion of sqrt(2)), A161489 (decimal expansion of (52323+26522*sqrt(2))/191^2). %K A161488 cons,nonn %O A161488 1,2 %A A161488 _Klaus Brockhaus_, Jun 13 2009