%I #6 Dec 26 2016 03:23:48
%S 3,3,3,1,7,7,9,2,3,8,0,7,7,1,8,6,7,4,3,1,8,3,7,6,1,3,6,3,5,5,2,4,4,2,
%T 2,6,6,5,9,4,1,7,1,4,0,2,4,9,6,2,9,7,4,3,1,5,0,8,3,3,3,3,8,0,0,2,2,6,
%U 5,7,9,3,6,9,5,7,5,6,6,6,9,6,6,1,2,6,3,2,6,8,6,3,1,7,1,5,9,7,7,3,0,3,0,3,9
%N Decimal expansion of the square of the Euler-Mascheroni constant.
%C The Pierce expansion is 3, 2144, 2463, 5226, 17239, 51372, 287963, 387316, 3226210,...
%H G. C. Greubel, <a href="/A155969/b155969.txt">Table of n, a(n) for n = 0..1000</a>
%F Equals A001620^2.
%e 0.3331779238077186743183761363552442...
%p evalf(gamma^2);
%t RealDigits[N[EulerGamma^2, 100]][[1]] (* _G. C. Greubel_, Dec 26 2016 *)
%o (PARI) Euler^2 \\ _G. C. Greubel_, Dec 26 2016
%K cons,easy,nonn
%O 0,1
%A _R. J. Mathar_, Jan 31 2009