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 A010530 #15 Feb 11 2025 14:45:24
%S A010530 8,8,3,1,7,6,0,8,6,6,3,2,7,8,4,6,8,5,4,7,6,4,0,4,2,7,2,6,9,5,9,2,5,3,
%T A010530 9,6,4,1,7,4,6,3,9,4,8,0,9,3,1,4,1,7,8,2,6,2,1,0,2,0,2,9,7,2,5,5,7,1,
%U A010530 3,9,9,3,8,2,3,5,4,4,2,8,4,0,3,7,0,4,3,5,5,3,9,4,1,4,7,7,1,5,1
%N A010530 Decimal expansion of square root of 78.
%C A010530 Continued fraction expansion is 8 followed by {1, 4, 1, 16} repeated. - _Harry J. Smith_, Jun 09 2009
%H A010530 Harry J. Smith, <a href="/A010530/b010530.txt">Table of n, a(n) for n = 1..20000</a>
%H A010530 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>.
%e A010530 8.831760866327846854764042726959253964174639480931417826210202972557139...
%t A010530 RealDigits[N[78^(1/2),200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jan 23 2012 *)
%o A010530 (PARI) { default(realprecision, 20080); x=sqrt(78); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010530.txt", n, " ", d)); } \\ _Harry J. Smith_, Jun 09 2009
%Y A010530 Cf. A010156 Continued fraction.
%K A010530 nonn,cons
%O A010530 1,1
%A A010530 _N. J. A. Sloane_