A024498 a(n) = [ C(2n,n)/n ].

2, 3, 6, 17, 50, 154, 490, 1608, 5402, 18475, 64130, 225346, 800046, 2865471, 10341168, 37567524, 137270954, 504174183, 1860277042, 6892326441, 25631327354, 95640861987, 357975249026, 1343650153462, 5056424257510, 19073789728773, 72108867616596

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Programs

Mathematica

Table[Floor[Binomial[2n,n]/n],{n,40}] (* Harvey P. Dale, Nov 28 2014 *)