OFFSET
1,1
LINKS
Hugo Pfoertner, Table of n, a(n) for n = 1..1480
EXAMPLE
a(6) = lcm(2+1, 3+1, 5+1, 7+1, 11+1, 13+1) = lcm(3, 2^2, 2*3, 2^3, 3*2^2, 2*7) = 7*3*2^3 = 168.
PROG
(PARI) a(n) = lcm(vector(n, k, prime(k)+1)); \\ Michel Marcus, Mar 15 2018
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Aug 12 2003
STATUS
approved