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%I #13 Dec 25 2021 12:05:25
%S 6,9,5,4,5,2,3,5,5,7,3,3,2,4,4,9,1,1,9,2,6,8,5,1,0,6,4,4,1,4,3,2,0,2,
%T 5,5,5,7,8,9,4,3,9,5,1,7,3,3,1,2,8,5,8,3,2,7,2,1,6,1,2,6,2,3,4,3,3,6,
%U 2,1,9,1,1,5,4,9,9,4,1,9,1,3,0,2,6,4,5,9,2,5,2,1,1,3,4,1,2,1,9,9,0,2,2,5,7
%N Decimal expansion of (1 - gamma)*zeta(2), where gamma is Euler's constant (or the Euler-Mascheroni constant).
%F Equals A153810*A013661.
%e 0.695452355733244911926851064414320...
%t First[RealDigits[(1-EulerGamma)Zeta[2],10,105]]
%o (PARI) (1-Euler)*zeta(2) \\ _Michel Marcus_, Jul 16 2021
%Y Cf. A001620, A013661, A153810, A346111, A346366.
%K nonn,cons
%O 0,1
%A _Stefano Spezia_, Jul 14 2021