%I #5 Mar 30 2012 17:29:13
%S 11,2,4,3,5,9,1,30,6,20,16,8,24,15,13,39,36,56,64,72,29,49,27,60,54,
%T 63,65,45,12,99,28,47,88,51,83,31,59,94,336,108,182,204,184,38,37,188,
%U 210,91,62,10,224,202,128,115,66,111,156,566,43,255,279,315,180,257,102,118
%N a(1) = 11. For n > 1, a(n) is the least unused number such that every concatenation a(n)a(n-1)...a(2)a(1) is prime.
%C Is this a rearrangement of the natural numbers?
%Y Cf. A089710, A089711, A089560-A089573.
%K base,nonn
%O 1,1
%A _Ray Chandler_, Nov 22 2003
%E Edited by _Charles R Greathouse IV_, Apr 29 2010