OFFSET
1,1
COMMENTS
LINKS
Kellen Shenton, Table of n, a(n) for n = 1..82
PROG
(PARI) n -> factor((2*n)!-n!+1)[1, 1]
CROSSREFS
KEYWORD
nonn
AUTHOR
M. F. Hasler, Feb 09 2014
EXTENSIONS
a(26)-a(42) from Chai Wah Wu, Oct 15 2019
Typo in a(32) corrected by Seth A. Troisi, May 13 2022
STATUS
approved