This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A145712 #6 May 01 2013 21:11:53 %S A145712 0,0,2,245,2053,17518,153645,1362970,12244431,111153241 %N A145712 Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 9. %e A145712 a(3)=2 because out of the first 1000 primes, only two have first and last digits 9, 919 and 929. %Y A145712 Cf. A145709 A145710 A145711 A145713 %K A145712 hard,nonn,base %O A145712 1,3 %A A145712 _Enoch Haga_, Oct 16 2008 %E A145712 Better definition from R. J. Mathar, Aug 04 2010 %E A145712 Edited and corrected by _N. J. A. Sloane_, Aug 16 2010 %E A145712 a(7)-a(10) from _D. S. McNeil_, Aug 29 2010