%I #9 Mar 09 2015 11:38:29
%S 21,32,33,47,57,58,60,62,70,71,96,97,105,106,130,131,150,155,167,177,
%T 234,243,246,248,249,255,261,300,309,314,316,318,343,345,350,352,386,
%U 388,401,406,419,423,445,449,451
%N Positions of 6's in the decimal expansion of exp(1).
%H Harvey P. Dale, <a href="/A054282/b054282.txt">Table of n, a(n) for n = 1..1000</a>
%t Flatten[Position[RealDigits[Exp[1],10,1000][[1]],6]] (* _Harvey P. Dale_, Jun 05 2012 *)
%K nonn,base
%O 1,1
%A _Simon Plouffe_, Feb 20 2000