OFFSET
0,2
LINKS
Daniel Suteu, Table of n, a(n) for n = 0..50
FORMULA
PROG
(PARI) a(n) = 4^(2*n) * (n!)^3 * (n+1)!;
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Daniel Suteu, Dec 25 2016
STATUS
approved