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Positions of 7's in the decimal expansion of Euler's constant.
1

%I #12 Oct 07 2015 19:29:49

%S 2,3,58,60,69,70,73,74,75,80,87,94,97,108,114,143,147,166,171,174,175,

%T 177,179,184,195,205,218,229,230,249,253,256,262,265,277,304,305,312,

%U 327,334,354,362,363,366,381,386

%N Positions of 7's in the decimal expansion of Euler's constant.

%H Harvey P. Dale, <a href="/A054313/b054313.txt">Table of n, a(n) for n = 1..1000</a>

%t Flatten[Position[RealDigits[EulerGamma,10,500][[1]],7]] (* _Harvey P. Dale_, Oct 07 2015 *)

%K nonn,base

%O 1,1

%A _Simon Plouffe_, Feb 20 2000