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 A004576 #19 Sep 08 2022 08:44:33 %S A004576 2,5,7,2,6,6,8,6,4,4,6,3,0,8,6,5,3,5,1,7,8,0,0,0,6,4,5,4,1,1,6,8,5,6, %T A004576 6,0,6,4,3,2,5,4,4,4,7,1,8,8,5,7,3,4,1,2,7,4,2,1,7,2,6,2,1,3,1,1,8,7, %U A004576 1,3,7,4,4,6,5,6,6,6,3,1,8,5,0,8,7,4,7,8,4,1,6,8,8,0,5,1,6,3,2,0,0,3,7,0,1 %N A004576 Expansion of sqrt(7) in base 9. %H A004576 G. C. Greubel, <a href="/A004576/b004576.txt">Table of n, a(n) for n = 1..10000</a> %H A004576 Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a> %t A004576 RealDigits[Sqrt[7],9,105][[1]] (* _Harvey P. Dale_, Dec 07 2011 *) %o A004576 (Magma) d:= 7; m:=9; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // _G. C. Greubel_, Mar 25 2018 %Y A004576 Cf. A010465. %K A004576 nonn,base,cons %O A004576 1,1 %A A004576 _N. J. A. Sloane_ %E A004576 Corrected and extended by _Harvey P. Dale_, Dec 07 2011