Values of n corresponding to the terms in sequence A080155. For any k, the concatenation of the a(1) to a(k)-th primes is prime and each value of k is the smallest for which this is true.
A080156
Values of n corresponding to the terms in sequence A080155. For any k, the concatenation of the a(1) to a(k)-th primes is prime and each value of k is the smallest for which this is true.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =11a(4) =15a(5) =50a(6) =54a(7) =106a(8) =148a(9) =149a(10) =156a(11) =188a(12) =200a(13) =211a(14) =248a(15) =326a(16) =359a(17) =374a(18) =417a(19) =467a(20) =699a(21) =798a(22) =891a(23) =966a(24) =1038a(25) =1519a(26) =1542a(27) =1578a(28) =1831a(29) =1908
External references
- oeis: A080156