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 A004549 #15 Sep 08 2022 08:44:33 %S A004549 1,2,3,2,3,1,2,1,3,2,2,3,2,2,0,1,1,2,0,1,0,3,0,2,2,2,2,1,3,0,3,2,3,0, %T A004549 2,1,1,1,3,1,0,0,2,3,1,1,3,0,0,1,3,2,0,2,3,2,0,0,3,2,3,2,0,2,1,0,2,1, %U A004549 1,3,1,2,0,0,3,1,0,3,0,3,0,1,1,0,3,3,1,2,2,1,0,1,3,2,1,2,0,3,0 %N A004549 Expansion of sqrt(3) in base 4. %H A004549 Vincenzo Librandi, <a href="/A004549/b004549.txt">Table of n, a(n) for n = 1..5000</a> %H A004549 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004549 RealDigits[Sqrt[3], 4, 130][[1]] (* _Vincenzo Librandi_, Jan 07 2018 *) %o A004549 (Magma) Prune(Reverse(IntegerToSequence(Isqrt(3*4^200), 4))); // _Vincenzo Librandi_, Jan 07 2018 %Y A004549 Cf. A002194, A004547, A004548, %Y A004549 Cf. A004540, A004559, A004575. %K A004549 nonn,base,cons %O A004549 1,2 %A A004549 _N. J. A. Sloane_