OFFSET
1,2
COMMENTS
A permutation of the natural numbers.
FORMULA
a(n)=[2n/3] if this is positive and new, else a(n)=[3n/2].
EXAMPLE
a(1)=[3/2]=1 because [2/3] is not positive.
a(2)=[2*3/2]=3.
a(3)=[3*2/3]=2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 11 2006
STATUS
approved