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%I #8 Oct 10 2014 13:49:15
%S 13,29,31,41,47,53,61,79,83,97,101,103,107,109,113,163,227,229,241,
%T 263,269,281,307,331,347,367,401,449,463,487,503,509,521,523,541,547,
%U 557,563,569,587,601,607,641,647,661,701,709,743,769,787,809,821,823,829
%N Define dd(n) = the number formed by concatenating the absolute difference of successive digits. Sequence contains primes p such that dd(p) is also prime. (Primes in which the number formed by successive digit difference is also a prime.).
%C Conjecture: Sequence is infinite. Subsidiary sequence: number of n-digit members.
%H Harvey P. Dale, <a href="/A087593/b087593.txt">Table of n, a(n) for n = 0..1000</a>
%e 29 is a member as absolute(2-9) = 7 is a prime.
%e 101 is a member as 1~0= 1, 0~1 = 1 and dd(101) = 11 is a prime.
%t Select[Prime[Range[200]],PrimeQ[FromDigits[Abs[Differences[ IntegerDigits[ #]]]]]&] (* _Harvey P. Dale_, Oct 10 2014 *)
%Y Cf. A087594, A087595.
%K base,nonn
%O 0,1
%A _Amarnath Murthy_, Sep 18 2003
%E More terms from _David Wasserman_, Jun 15 2005
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