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 A171542 #11 Feb 18 2020 10:24:19 %S A171542 6,2,1,0,5,9,0,0,3,4,0,8,1,1,8,7,9,6,0,1,6,5,1,4,1,7,8,1,6,4,4,1,8,7, %T A171542 8,8,1,3,4,5,7,7,1,2,3,2,0,3,9,5,5,9,8,9,5,1,5,5,3,9,6,3,4,5,9,0,7,7, %U A171542 7,6,1,5,9,7,0,8,7,2,0,1,8,0,7,3,3,9,5,5,6,5,3,7,1,5,8,3,6,0,7,0,4,6,5,5,9 %N A171542 Decimal expansion of sqrt(27/70). %C A171542 The absolute value of the Clebsch-Gordan coupling coefficient <j1 j2; m1 m2 | J M> = <2 3/2 ; -1 3/2 | 5/2 1/2>. %H A171542 Daniel Starodubtsev, <a href="/A171542/b171542.txt">Table of n, a(n) for n = 0..10000</a> %H A171542 Wikipedia, <a href="https://en.wikipedia.org/wiki/Table_of_Clebsch%E2%80%93Gordan_coefficients">Table of Clebsch-Gordan coefficients</a> %F A171542 Equals A010482/A010522 = A010541*A171537/10. %e A171542 sqrt(27/70) = 3*sqrt(210)/70 = 0.621059003408118796016514178164... %t A171542 RealDigits[Sqrt[27/70],10,120][[1]] (* _Harvey P. Dale_, Apr 26 2011 *) %Y A171542 Cf. A010482, A010522, A010541, A171537. %K A171542 cons,easy,nonn %O A171542 0,1 %A A171542 _R. J. Mathar_, Dec 11 2009