OFFSET
1,1
COMMENTS
All terms are primes of the form 4m+3 belonging to A002145. A002145 is the union of this sequence and A129517 (odd primes p such that p divides (p-1)!! - 1).
Odd numbers k > 1 such that k divides (k-1)!! + 1. - Thomas Ordowski, Jul 26 2016
MATHEMATICA
Select[Range[3, 2000], IntegerQ[((#-2)!!-1)/# ]&&IntegerQ[((#-3)!!-1)/# ]&]
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Apr 18 2007
STATUS
approved