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 A154748 #14 Sep 08 2022 08:45:40 %S A154748 0,1,1,1,4,6,1,2,2,2,1,1,6,1,179,46,1,1,3,2,1,1,3,6,3,1,1,1,1,2,1,1, %T A154748 56,1,1,1,1,66,1,1,2,17,8,2,7,12,1,1,8,1,2,2,1,1,2,1,12,1,2,2,2,2,1,1, %U A154748 1,8,1,1,1,1,2,1,2,5,1,6,8,1,1,1,2,7,1,9,1,2 %N A154748 Continued fraction for sqrt(sqrt(2) - 1), the radius vector of the point of bisection of the arc of the unit lemniscate (x^2 + y^2)^2 = x^2 - y^2 in the first quadrant. %H A154748 G. C. Greubel, <a href="/A154748/b154748.txt">Table of n, a(n) for n = 0..10000</a> %e A154748 Sqrt(sqrt(2) - 1) = 0.643594252905582624735443437418... = [0; 1, 1, 1, 4, 6, 1, 2, 2, 2, 1, 1, 6, ...]. %t A154748 nmax = 1000; ContinuedFraction[ Sqrt[Sqrt[2] - 1], nmax + 1] %o A154748 (PARI) contfrac(sqrt(sqrt(2) - 1)) \\ _Michel Marcus_, Dec 10 2016 %o A154748 (Magma) ContinuedFraction(Sqrt(Sqrt(2)-1)); // _Vincenzo Librandi_, Dec 10 2016 %Y A154748 Cf. A154747, A154749 and A154750 for the decimal expansion and the numerators and denominators of the convergents. %K A154748 nonn,cofr,easy %O A154748 0,5 %A A154748 _Stuart Clary_, Jan 14 2009