a(n) is the least k such that k - i! is a semiprime for all i from 1 to n.
A376332
a(n) is the least k such that k - i! is a semiprime for all i from 1 to n.
Terms
- a(0) =5a(1) =11a(2) =16a(3) =135a(4) =135a(5) =923a(6) =6083a(7) =71663a(8) =423959a(9) =3995879a(10) =43216583a(11) =489118019a(12) =6233987183a(13) =87199150463
External references
- oeis: A376332