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 A088467 #16 Feb 16 2025 08:32:51 %S A088467 7,7,8,0,9,4,4,8,9,1,7,5,1,7,9,4,3,2,8,9,0,1,3,4,6,2,5,9,4,9,1,8,1,7, %T A088467 1,2,5,2,4,7,6,3,2,2,8,9,7,9,7,6,6,6,7,8,9,1,4,3,7,3,2,4,0,8,5,8,5,7, %U A088467 0,1,1,7,4,8,0,7,7,6,9,9,5,4,6,0,1,7,5,9,7,4,8,3,8,3,2,8,4,9,2,5,3,7 %N A088467 Decimal expansion of 6/(Pi^2 A086724). %C A088467 The probability that a randomly chosen Eisenstein integer is squarefree, and the probability that two randomly chosen Eisenstein integers are coprime. - _Amiram Eldar_, Jun 13 2020 %D A088467 Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, p. 601. %H A088467 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/RelativelyPrime.html">Relatively Prime</a> %e A088467 0.778094489... %t A088467 A086724 = H = 1+(PolyGamma[1, 4/3]-PolyGamma[1, 2/3])/9; RealDigits[6/(Pi^2*H), 10, 102] // First (* _Jean-François Alcover_, Jun 03 2014 *) %Y A088467 Cf. A088454, A086724. %K A088467 nonn,cons %O A088467 0,1 %A A088467 _Eric W. Weisstein_, Oct 02 2003