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%I #7 Mar 31 2012 14:00:56
%S 281,461,641,821,1031,1091,1229,1277,1301,1319,1427,1697,1721,1787,
%T 1877,2081,2129,2381,2687,2711,2801,3119,3251,3257,3371,3467,3527,
%U 3581,3821,3851,4091,4127,4157,4217
%N Lesser of a twin prime pair (p,p+2) such that permuting the digits of p and those of p+2 gives a different twin prime pair (q, q+2).
%C Permutations with initial zeros are disallowed, so that 101 is not a member (101,103 and 11,13); equivalently, we require that p is a permutation of the digits of q as well.
%e 281 is a member as 281 is the lesser of the twin prime pair 281,283, and after permuting 821, 823 is also a twin prime pair.
%Y Cf. A001359, A172271, A172494, A173255, A174454
%K nonn,base
%O 1,1
%A Ulrich Krug (leuchtfeuer37(AT)gmx.de), May 17 2010
%E Corrected and edited by _D. S. McNeil_, Nov 23 2010
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