Number of 2n-digit primes that are concatenation of n two-digit distinct primes p_1...p_n, 98>p_1>p_2>...>p_n>10.
A168513
Number of 2n-digit primes that are concatenation of n two-digit distinct primes p_1...p_n, 98>p_1>p_2>...>p_n>10.
Terms
- a(0) =21a(1) =36a(2) =300a(3) =722a(4) =2493a(5) =4766a(6) =9459a(7) =13091a(8) =18484a(9) =18779a(10) =18048a(11) =12995a(12) =9122a(13) =4424a(14) =2160a(15) =639a(16) =234a(17) =48a(18) =8a(19) =0a(20) =0
External references
- oeis: A168513