OFFSET
0,3
COMMENTS
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
FORMULA
MATHEMATICA
Table[Binomial[2 (n + 1), n] GCD[n, 2]/(2 (n + 1)), {n, 0, 40}] (* Vincenzo Librandi, Feb 25 2014 *)
PROG
(Magma) [Binomial(2*(n+1), n)*Gcd(n, 2)/(2*(n+1)): n in [0..30]]; // Vincenzo Librandi, Feb 25 2014
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Feb 23 2014
EXTENSIONS
a(26) from Vincenzo Librandi, Feb 25 2014
STATUS
approved