OFFSET
2,1
COMMENTS
The entries are integer for n >= 2 because binomial(n^2,n+1)/(n-1) = n*binomial(n^2-2,n-1), which is a product of two integers.
LINKS
G. C. Greubel, Table of n, a(n) for n = 2..335
MAPLE
n0:=30: T:=array(1..n0): T:=array(1..n0-1): for n from 2 to n0 do: T[n-1]:= (binomial(n^2, n+1))/(n-1): od: print(T):
MATHEMATICA
Table[Binomial[n^2, n+1]/(n-1), {n, 2, 40}] (* G. C. Greubel, Apr 28 2024 *)
PROG
(Magma) [Binomial(n^2, n+1)/(n-1): n in [2..30]]; // G. C. Greubel, Apr 28 2024
(SageMath) [binomial(n^2, n+1)/(n-1) for n in range(2, 31)] # G. C. Greubel, Apr 28 2024
(PARI) a(n) = binomial(n^2, n+1)/(n-1) \\ Charles R Greathouse IV, May 01 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, May 13 2010
EXTENSIONS
Removed redundant second Maple version - R. J. Mathar, May 14 2010
STATUS
approved