%I A040025
%S A040025 4,15,93,668,5172,42042,353701,3036643,27045226,239093865,2158090933
%N A040025 Number of prime palindromes with 2n+1 digits.
%H A040025 Shyam Sunder Gupta, <a href="http://listserv.nodak.edu/cgi-bin/wa.exe?A1=ind0602&L=nmbrthry">
               Palindromic Primes up to 10^19</a>.
%H A040025 Shyam Sunder Gupta, <a href="http://listserv.nodak.edu/cgi-bin/wa.exe?A2=ind0903&L=nmbrthry&T=0&F=&S=&P=2104"\
               >Palindromic Primes up to 10^21</a>. [From Shyam Sunder Gupta (guptass(AT)rediffmail.com), 
               Mar 14 2009]
%e A040025 a(2)=12 because 12th fibonacci number i.e. 144 is the smallest fibonacci 
               number which is a multiple of primorial(2) i.e. 6
%e A040025 a(2)=15 because Number of prime palindromes with 2n+1 i.e. 5 digits is 
               15. [From Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 14 
               2009]
%Y A040025 Subsequence of A016115, which is the main entry.
%Y A040025 Cf. A016115.
%Y A040025 Sequence in context: A081011 A008829 A013193 this_sequence A109365 A079128 
               A081548
%Y A040025 Adjacent sequences: A040022 A040023 A040024 this_sequence A040026 A040027 
               A040028
%K A040025 nonn,hard,base
%O A040025 0,1
%A A040025 Patrick De Geest (pdg(AT)worldofnumbers.com)
%E A040025 a(10) from Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 12 2006
%E A040025 a(11) from Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 14 2009