OFFSET
2,1
LINKS
FORMULA
EXAMPLE
a(3) = 23,because !4 = 9 and the 9th prime is 23.
MATHEMATICA
Prime[Subfactorial[Range[2, 15]]] (* Harvey P. Dale, Nov 11 2011 *)
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Shyam Sunder Gupta, Feb 11 2007
EXTENSIONS
a(16)-a(19) using Kim Walisch's primecount, from Amiram Eldar, Aug 27 2020
STATUS
approved