Prime Riesel numbers p that are not Mersenne primes such that 2*p is a noncototient.
A263958
Prime Riesel numbers p that are not Mersenne primes such that 2*p is a noncototient.
Terms
- a(0) =509203a(1) =2554843a(2) =9203917a(3) =9545351a(4) =10645867a(5) =11942443a(6) =14608183a(7) =15627133a(8) =15811777a(9) =16413457a(10) =21013423a(11) =21465637a(12) =25792993a(13) =30622663a(14) =30932729a(15) =32126257a(16) =37996753a(17) =40672237a(18) =41641181a(19) =43099781a(20) =43773809a(21) =47775613a(22) =48400783a(23) =52518187a(24) =52992283
External references
- oeis: A263958