Primes p where q = p + 4 is also prime and rad((p+1)(p+2)(p+3)) < pq, where rad(k) is the largest squarefree number dividing k.
A268350
Primes p where q = p + 4 is also prime and rad((p+1)(p+2)(p+3)) < pq, where rad(k) is the largest squarefree number dividing k.
Terms
- a(0) =7a(1) =13a(2) =79a(3) =97a(4) =223a(5) =349a(6) =673a(7) =1087a(8) =1213a(9) =1663a(10) =3697a(11) =13309a(12) =13687a(13) =16927a(14) =20479a(15) =21139a(16) =25999a(17) =32797a(18) =33613a(19) =78649a(20) =122449a(21) =151549a(22) =263167a(23) =401407a(24) =651247a(25) =1058749a(26) =1656247a(27) =1893373a(28) =2060449a(29) =2146687
External references
- oeis: A268350