OFFSET
1,1
FORMULA
a(n) = ceiling(3*n^(2/3)).
EXAMPLE
a(8) = 12 because ceiling(3*8^(2/3)) = ceiling(12) = 12.
MATHEMATICA
Table[Ceiling[3*n^(2/3)], {n, 1, 85}]
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Joseph Biberstine (jrbibers(AT)indiana.edu), Jan 16 2005
STATUS
approved