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 A004574 #35 Oct 19 2023 09:10:41 %S A004574 2,4,3,4,3,3,0,6,6,5,4,2,4,6,0,3,3,2,3,3,3,2,6,1,3,6,2,4,6,6,1,5,6,6, %T A004574 2,3,0,4,2,2,0,0,2,3,1,3,5,2,5,2,0,6,4,4,3,1,5,6,1,4,5,1,0,6,0,2,2,3, %U A004574 3,2,1,3,5,5,3,5,5,4,1,6,2,1,2,2,1,5,3,5,6,0,3,5,2,0,1,0,5,1,6 %N A004574 Expansion of sqrt(7) in base 7. %H A004574 G. C. Greubel, <a href="/A004574/b004574.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..2000 from Vincenzo Librandi) %H A004574 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004574 RealDigits[Sqrt[7], 7, 100][[1]] (* _G. C. Greubel_, Mar 25 2018 *) %o A004574 (Magma) Prune(Reverse(IntegerToSequence(Isqrt(7*7^200), 7))); // _Vincenzo Librandi_, Apr 28 2017 %Y A004574 Cf. A010465. %K A004574 nonn,base,cons %O A004574 1,1 %A A004574 _N. J. A. Sloane_ %E A004574 Updated by _Alois P. Heinz_ at the suggestion of Kevin Ryde, Feb 19 2012