OFFSET
0,2
FORMULA
a(n) = floor(sqrt(8*Pi*n) + 1/2).
MATHEMATICA
Table[Floor[Sqrt[8*Pi*n] + 1/2, 1], {n, 0, 65}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Mats Granvik, May 30 2022
STATUS
approved