OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
MAPLE
MATHEMATICA
Table[Binomial[(n(n+1))/2+n+2, n], {n, 0, 20}] (* Harvey P. Dale, Aug 09 2014 *)
PROG
(PARI) a(n)=binomial(n*(n+1)/2+n+2, n)
(Magma) [Binomial((n^2+3*n+4) div 2, n): n in [0..20]] // Vincenzo Librandi, Aug 09 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jun 04 2005
STATUS
approved