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 A171537 #7 Jan 30 2016 16:25:51 %S A171537 6,5,4,6,5,3,6,7,0,7,0,7,9,7,7,1,4,3,7,9,8,2,9,2,4,5,6,2,4,6,8,5,8,3, %T A171537 5,5,5,6,9,2,0,8,0,8,2,3,9,5,4,2,4,5,5,7,5,1,5,3,2,0,3,0,3,4,1,5,2,6, %U A171537 6,9,1,7,9,3,5,3,9,5,8,4,0,9,4,3,4,8,0,2,2,2,7,8,4,7,7,7,8,6,1,8,1,1,0,8,5 %N A171537 Decimal expansion of sqrt(3/7). %C A171537 The absolute value of the Clebsch-Gordan coupling coefficient <j1 j2; m1 m2 | J M> = <2 3/2 ; -2 -1/2 | 7/2 -5/2>. %H A171537 Wikipedia, <a href="https://en.wikipedia.org/wiki/Table_of_Clebsch%E2%80%93Gordan_coefficients">Table of Clebsch-Gordan coefficients</a> %F A171537 equals A002194/A010465 = 3/A010477. %e A171537 sqrt(3/7) = 0.6546536707079771437982924562... %t A171537 RealDigits[N[Sqrt[3/7],300]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Mar 04 2011*) %K A171537 cons,easy,nonn %O A171537 0,1 %A A171537 _R. J. Mathar_, Dec 11 2009