OFFSET
0,3
REFERENCES
E. R. Cavalcanti and M. A. Spohn, On the applicability of mobility metrics for user movement pattern recognition in MANETs, in Proceeding MobiWac '13 Proceedings of the 11th ACM international symposium on Mobility management and wireless access, Pages 123-130, ACM New York, NY, USA 2013, ISBN: 978-1-4503-2355-0 doi:10.1145/2508222.2508228
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..337
FORMULA
a(n) = C(n^2+n-1, n).
a(n) = [x^n] 1/(1 - x)^(n^2). - Ilya Gutkovskiy, Oct 03 2017
MAPLE
a:= n-> binomial(n*(n+1)-1, n):
seq(a(n), n=0..17); # Alois P. Heinz, Oct 22 2021
MATHEMATICA
Table[Binomial[n^2 + n - 1, n], {n, 0, 17}] (* Michael De Vlieger, Oct 05 2017 *)
PROG
(PARI) a(n) = binomial(n^2+n-1, n); \\ Altug Alkan, Oct 03 2017
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Vladeta Jovovic, Apr 19 2000
EXTENSIONS
a(15) corrected by Ilya Gutkovskiy, Oct 03 2017
STATUS
approved