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x(n+1) = x(n)*Pi/3 with x(0) = Pi, and a(n) = floor(x(n)).
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%I #20 Jan 28 2013 19:19:32

%S 3,3,3,3,3,3,4,4,4,4,4,5,5,5,5,6,6,6,7,7,7,8,8,9,9,9,10,10,11,11,12,

%T 13,13,14,15,15,16,17,18,18,19,20,21,22,23,25,26,27,28,30,31,33,34,36,

%U 37,39,41,43,45,47,49,52,54,57,60,62,65,69,72,75,79,83,86

%N x(n+1) = x(n)*Pi/3 with x(0) = Pi, and a(n) = floor(x(n)).

%C 24 is the first number greater than 3 not in the sequence.

%C Later output is more separated, for example: 40888572599, 42818413097, 44839337342, 46955644261.

%F x(n+1) = x(n)*Pi/3 with x(0) = Pi, and a(n) = floor(x(n)).

%o (JavaScript)

%o pi=Math.PI;

%o x=pi;

%o for (i=0;i<600;i++) {x*=pi;x/=3;document.write(Math.floor(x)+", ");}

%Y Cf. A000796 (Pi), A019670 (Pi/3).

%K nonn

%O 0,1

%A _Jon Perry_, Jan 25 2013