Numbers k such that (1!)^2 + (2!)^2 + (3!)^2 + ... + (k!)^2 is prime.
A100289
Numbers k such that (1!)^2 + (2!)^2 + (3!)^2 + ... + (k!)^2 is prime.
Terms
- a(0) =2a(1) =3a(2) =4a(3) =5a(4) =7a(5) =8a(6) =10a(7) =18a(8) =21a(9) =42a(10) =51a(11) =91a(12) =133a(13) =177a(14) =182a(15) =310a(16) =3175a(17) =9566a(18) =32841
External references
- oeis: A100289