PDan numbers: numbers n of the form 3^A * 5^B * 7^C * 11^D with n+-2 and n+-4 prime.
A029712
PDan numbers: numbers n of the form 3^A * 5^B * 7^C * 11^D with n+-2 and n+-4 prime.
Terms
- a(0) =9a(1) =15a(2) =105a(3) =825a(4) =1485a(5) =1875a(6) =3465a(7) =22275a(8) =299475a(9) =14467005a(10) =18907875a(11) =79413075a(12) =570773535255a(13) =943523599095
External references
- oeis: A029712