OFFSET
1,2
COMMENTS
A useful lower bound when studying certain problems involving compositions.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Table[Ceiling[Binomial[2 n - 1, n - 1]/n], {n, 35}] (* Harvey P. Dale, Apr. 09 2011 *)
PROG
(Magma) [Ceiling(Binomial(2*n-1, n-1)/n): n in [1..60]]; // Vincenzo Librandi, Sep 07 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Gerbicz and N. J. A. Sloane, Apr 07 2011
STATUS
approved