Starting from a(1)=1, a(n) is the minimum integer greater than a(n-1) such that a(n)+a(n-1), a(n)*a(n-1)+1 and a(n)*a(n-1)-1 are all primes.
A228590
Starting from a(1)=1, a(n) is the minimum integer greater than a(n-1) such that a(n)+a(n-1), a(n)*a(n-1)+1 and a(n)*a(n-1)-1 are all primes.
Terms
- a(0) =1a(1) =4a(2) =15a(3) =16a(4) =27a(5) =74a(6) =375a(7) =398a(8) =465a(9) =482a(10) =945a(11) =962a(12) =1149a(13) =1228a(14) =1485a(15) =1624a(16) =1737a(17) =1820a(18) =1941a(19) =1990a(20) =2031a(21) =2690a(22) =2787a(23) =3040a(24) =3327a(25) =3436a(26) =3525a(27) =3704a(28) =3855a(29) =3934
External references
- oeis: A228590