OFFSET
1,2
COMMENTS
PROG
(PARI) a(n)=gcd(prod(i=1, n, prime(i)), prod(i=1, n, prime(i)+1)) \\ Charles R Greathouse IV, Feb 19 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, May 15 2000
STATUS
approved