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 A176215 #13 Jan 05 2024 07:03:41 %S A176215 4,1,9,0,8,9,0,2,3,0,0,2,0,6,6,4,4,5,3,8,2,7,8,7,9,1,3,1,2,0,3,2,0,8, %T A176215 5,3,5,8,1,0,9,7,8,7,7,9,9,9,1,9,3,3,0,1,6,9,0,7,5,7,7,7,9,8,9,2,9,9, %U A176215 7,3,1,0,8,4,9,0,8,9,0,9,3,5,2,0,3,4,3,3,7,4,4,6,5,5,4,8,2,5,0,3,0,5,8,9,0 %N A176215 Decimal expansion of (10+2*sqrt(30))/5. %C A176215 Continued fraction expansion of (10+2*sqrt(30))/5 is A010710. %H A176215 Daniel Starodubtsev, <a href="/A176215/b176215.txt">Table of n, a(n) for n = 1..10000</a> %e A176215 (10+2*sqrt(30))/5 = 4.19089023002066445382... %t A176215 RealDigits[(10+2Sqrt[30])/5,10,120][[1]] (* _Harvey P. Dale_, Nov 28 2011 *) %Y A176215 Cf. A010485 (decimal expansion of sqrt(30)), A010710 (repeat 4, 5). %K A176215 cons,easy,nonn %O A176215 1,1 %A A176215 _Klaus Brockhaus_, Apr 12 2010