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 A004558 #34 Oct 19 2023 09:08:08 %S A004558 2,1,0,4,2,2,3,2,4,0,1,1,3,2,4,1,0,4,0,0,1,3,4,4,1,2,3,3,0,4,1,3,0,4, %T A004558 2,4,2,2,2,1,2,1,3,2,1,1,3,0,1,3,1,0,3,2,1,0,0,1,0,2,2,1,4,2,3,4,4,4, %U A004558 3,4,3,4,2,4,2,3,4,4,1,4,4,4,2,1,1,3,0,3,2,1,4,0,1,3,0,3,2,2,1 %N A004558 Expansion of sqrt(5) in base 5. %H A004558 G. C. Greubel, <a href="/A004558/b004558.txt">Table of n, a(n) for n = 1..10000</a> (terms 1.2000 from Vincenzo Librandi) %H A004558 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004558 RealDigits[Sqrt[5], 5, 100][[1]] (* _Vincenzo Librandi_, Apr 29 2017 *) %o A004558 (Magma) Prune(Reverse(IntegerToSequence(Isqrt(5*5^200), 5))); // _Vincenzo Librandi_, Apr 29 2017 %Y A004558 Cf. A002163. %K A004558 nonn,base,cons %O A004558 1,1 %A A004558 _N. J. A. Sloane_ %E A004558 Updated by _Alois P. Heinz_ at the suggestion of Kevin Ryde, Feb 19 2012