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Beginning with 1, numbers such that the differences a(k)-a(k-1) are distinct and every concatenation n>1 is prime.
1

%I #4 Dec 05 2013 19:56:38

%S 1,3,7,21,27,39,101,169,239,247,263,291,381,391,447,489,509,531,619,

%T 699,821,981,1011,1267,1367,1483,1691,1777,2241,2351,2403,2859,4153,

%U 4793,5299,5513,5553,5673,5797,6813,7491,7721,7861,8073,8363,8409,9781,9879

%N Beginning with 1, numbers such that the differences a(k)-a(k-1) are distinct and every concatenation n>1 is prime.

%Y Cf. A090505.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Dec 06 2003

%E Corrected and extended by _David Wasserman_, Dec 13 2005