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 A004585 #14 Sep 08 2022 08:44:33 %S A004585 1,1,0,0,1,0,1,0,0,1,1,0,0,0,1,0,1,1,0,0,0,0,0,1,1,1,0,1,0,1,1,0,1,1, %T A004585 0,1,0,0,1,0,1,1,0,1,1,0,1,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,0,0,0,0,1,0, %U A004585 0,1,0,1,0,0,0,1,0,1,0,1,1,1,1,0,0,1,0,0,0,0,0,1,1,0,0,0,0,1,1 %N A004585 Expansion of sqrt(10) in base 2. %H A004585 G. C. Greubel, <a href="/A004585/b004585.txt">Table of n, a(n) for n = 2..10000</a> %H A004585 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004585 RealDigits[Sqrt[10], 2, 100][[1]] (* _G. C. Greubel_, Mar 25 2018 *) %o A004585 (Magma) d:= 10; m:=2; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // _G. C. Greubel_, Mar 25 2018 %o A004585 (PARI) my(b = binary(sqrt(10))); concat(b[1], b[2]) \\ _Michel Marcus_, Mar 26 2018 %Y A004585 Cf. A010467. %K A004585 nonn,base,cons %O A004585 2,1 %A A004585 _N. J. A. Sloane_