OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
C. Pomerance, Divisors of the middle binomial coefficient, Amer. Math. Monthly, 112 (2015), 636-644.
MATHEMATICA
ris = {}; Do[If[Mod[Binomial[2 n, n], (n + 1) (n + 2)] == 0, AppendTo[ris, n]], {n, 100}]; ris (* Bruno Berselli, Jan 06 2014 *)
PROG
(PARI) { n=0; for (m=1, 10^9, if (binomial(2*m, m) % ((m + 1)*(m + 2)) == 0, write("b065347.txt", n++, " ", m); if (n==1000, return)) ) } \\ Harry J. Smith, Oct 17 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 30 2001
STATUS
approved