Numbers k such that 16*(10^k - 1)/3 + 1 is prime.
A281424
Numbers k such that 16*(10^k - 1)/3 + 1 is prime.
Terms
- a(0) =6a(1) =23a(2) =65a(3) =82a(4) =108a(5) =188a(6) =300a(7) =342a(8) =401a(9) =584a(10) =1570a(11) =4119a(12) =10030a(13) =24870a(14) =34710
External references
- oeis: A281424