Initial primes of Cunningham chains of first type with length exactly 3. Primes in A059453 that survive as primes just two "2p+1 iterations", forming chains of exactly 3 terms.
A059762
Initial primes of Cunningham chains of first type with length exactly 3. Primes in A059453 that survive as primes just two "2p+1 iterations", forming chains of exactly 3 terms.
Terms
- a(0) =41a(1) =1031a(2) =1451a(3) =1481a(4) =1511a(5) =1811a(6) =1889a(7) =1901a(8) =1931a(9) =3449a(10) =3491a(11) =3821a(12) =3911a(13) =5081a(14) =5441a(15) =5849a(16) =6101a(17) =6131a(18) =7151a(19) =7349a(20) =7901a(21) =8969a(22) =9221a(23) =10691a(24) =10709a(25) =11171a(26) =11471a(27) =11801a(28) =12101a(29) =12821
External references
- oeis: A059762