OFFSET
3,2
FORMULA
Round(sqrt(2*binomial(n, 3))). - Vladeta Jovovic, Jun 14 2003
MATHEMATICA
Table[Round[Sqrt[2*Binomial[n, 3]]], {n, 3, 60}] (* Harvey P. Dale, Nov 16 2021 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jul 30 2000.
STATUS
approved