OFFSET
0,3
FORMULA
a(n) = floor(sqrt(stirling2(2*n,n))).
MATHEMATICA
Table[Floor[Sqrt[StirlingS2[2n, n]]], {n, 0, 100}]
PROG
(Maxima) makelist(floor(sqrt(stirling2(2*n, n))), n, 0, 24);
CROSSREFS
KEYWORD
nonn
AUTHOR
Emanuele Munarini, Jul 07 2011
STATUS
approved