A063833 !n - 3 is prime.

1, 4, 5, 6, 13, 14, 20, 66, 91, 124, 212, 282, 460

Offset: 1

Author

Robert G. Wilson v, Aug 21 2001

Keywords

• nonn
• fini
• full

Comments

There are no further terms, because for n >= 467, 467 | !n - 3. - Serge Batalov, Jul 14 2017

Crossrefs

Cf. A063508.

Programs

Mathematica

Do[ If[ PrimeQ[ Sum[ k!, {k, 0, n - 1} ] - 3 ], Print[ n ] ], {n, 1, 800} ]
Position[Accumulate[Range[0,500]!],?(PrimeQ[#-3]&)]//Flatten (* _Harvey P. Dale, Sep 20 2019 *)