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 A279906 #19 Feb 18 2017 22:36:01 %S A279906 2,2,4,0,1,9,3,7,2,3,8,7,0,0,8,9,7,4,1,1,0,5,2,2,0,6,4,1,7,2,9,8,2,9, %T A279906 7,7,2,0,2,7,2,4,6,8,6,7,2,9,0,3,9,3,6,5,3,5,4,4,7,7,7,6,2,0,4,2,5,3, %U A279906 8,9,0,7,7,2,5,4,2,1,5,9,9,2,8,8,4,6,3,7,5,1,0,4,1,2,4,9,5,3,9,6,7,8,2,8,5 %N A279906 Decimal expansion of the number whose continued fraction expansion consists of the even numbers. %e A279906 2.2401937238700897411052206417298297720272468672903936535447776204253890772... %t A279906 RealDigits[ FromContinuedFraction[ 2Range[ 38]], 10, 111] %t A279906 RealDigits[ BesselI[0, 1]/BesselI[1, 1], 10, 111] (* _Robert G. Wilson v_, Feb 17 2017 *) %Y A279906 Cf. A060997, A073747. %K A279906 nonn,cons,easy %O A279906 1,1 %A A279906 _Robert G. Wilson v_, Dec 26 2016