OFFSET
0,3
COMMENTS
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..21
G. J. Rieger, Über Partitionen, Mathematische Annalen (1959), Volume: 138, page 356-362
A. V. Sills and D. Zeilberger, Formulae for the number of partitions of n into at most m parts (using the quasi-polynomial ansatz) (arXiv:1108.4391 [math.CO])
FORMULA
a(n) ~ (2*n)!^(n-1) / (n!*(n-1)!).
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Jun 07 2015
STATUS
approved