Primes of the form k!9-1, where k!9 is the nonuple factorial number (A114806).
A289755
Primes of the form k!9-1, where k!9 is the nonuple factorial number (A114806).
Terms
- a(0) =2a(1) =3a(2) =5a(3) =7a(4) =89a(5) =439a(6) =1609a(7) =4373a(8) =22679a(9) =5445439a(10) =152681759a(11) =17893715839
External references
- oeis: A289755