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%I #13 May 13 2013 01:49:00
%S 0,0,32,264,2103,17891,155956,1379175,12374435,112213301
%N Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 7.
%e a(3) = 32 because there are 32 primes in the set, from p(129)=727 to p(962)=7577.
%Y Cf. A145709 - A145713.
%K base,hard,nonn
%O 1,3
%A _Enoch Haga_, Oct 16 2008
%E Edited by _N. J. A. Sloane_, Aug 16 2010, based on emails from _Charles R Greathouse IV_, _Alois P. Heinz_, R. J. Mathar and Jack Brennen (who computed a(6)).
%E Offset changed to agree with A145713 by _D. S. McNeil_, Aug 29 2010
%E a(9), a(10) from _D. S. McNeil_, Aug 29 2010
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