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 A004586 #13 Sep 08 2022 08:44:33 %S A004586 1,0,0,1,1,1,0,1,0,2,2,0,1,0,0,0,0,0,0,1,1,1,0,0,2,2,1,2,0,1,2,0,1,0, %T A004586 0,1,0,2,2,1,0,2,0,2,1,1,0,2,1,0,2,0,0,2,2,2,0,2,0,0,2,1,0,1,0,0,2,0, %U A004586 2,1,0,0,1,1,0,0,0,0,0,1,2,0,2,1,0,1,0,0,2,1,2,0,0,1,2,0,1,1,1 %N A004586 Expansion of sqrt(10) in base 3. %H A004586 G. C. Greubel, <a href="/A004586/b004586.txt">Table of n, a(n) for n = 2..10000</a> %H A004586 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004586 RealDigits[Sqrt[10], 3, 100][[1]] (* _G. C. Greubel_, Mar 25 2018 *) %o A004586 (Magma) d:= 10; m:=3; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // _G. C. Greubel_, Mar 25 2018 %Y A004586 Cf. A010467. %K A004586 nonn,base,cons %O A004586 2,10 %A A004586 _N. J. A. Sloane_