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 A159846 #16 Sep 08 2022 08:45:44 %S A159846 4,3,2,5,2,3,4,4,4,1,5,4,4,5,3,2,4,0,8,6,0,9,1,4,3,5,6,2,6,7,6,5,7,1, %T A159846 2,2,8,9,4,1,2,1,1,5,6,9,9,8,7,5,8,2,8,3,2,6,2,1,6,4,0,1,5,7,3,7,1,3, %U A159846 0,4,8,7,7,0,3,4,6,7,5,9,2,6,6,1,0,9,0,3,0,3,8,6,8,5,4,6,5,9,3,6,7,4,5,6,5 %N A159846 Decimal expansion of (293619 + 186550*sqrt(2))/359^2. %C A159846 Equals lim_{n -> infinity} b(n)/b(n-1) for n mod 3 = 0, b = A130610. %C A159846 Equals lim_{n -> infinity} b(n)/b(n-1) for n mod 3 = 1, b = A159844. %H A159846 G. C. Greubel, <a href="/A159846/b159846.txt">Table of n, a(n) for n = 1..10000</a> %F A159846 Equals (650 + 287*sqrt(2))/(650 - 287*sqrt(2)). %F A159846 Equals (3 + 2*sqrt(2))*(19 - sqrt(2))^2/(19 + sqrt(2))^2. %e A159846 (293619 + 186550*sqrt(2))/359^2 = 4.32523444154453240860... %t A159846 RealDigits[(293619+186550Sqrt[2])/359^2,10,120][[1]] (* _Harvey P. Dale_, Jun 14 2011 *) %o A159846 (PARI) (293619 +186550*sqrt(2))/359^2 \\ _G. C Greubel_, May 19 2018 %o A159846 (Magma) (293619 +186550*Sqrt(2))/359^2; // _G. C. Greubel_, May 19 2018 %Y A159846 Cf. A130610, A159844, A002193 (decimal expansion of sqrt(2)), A159845 (decimal expansion of (363+38*sqrt(2))/359). %K A159846 cons,nonn %O A159846 1,1 %A A159846 _Klaus Brockhaus_, Apr 30 2009