OFFSET
1,2
COMMENTS
A permutation of the natural numbers.
EXAMPLE
A120231, written as a function, is
{(1,1),(2,3),(3,2),(4,6),(5,7),(6,4),(7,10),(8,5)...}.
Reversing each ordered pair and reordering gives
{(1,1),(2,3),(3,2),(4,6),(5,8),(6,4),(7,5),(8,12)...}.
Suppressing first components leaves
1,3,2,6,8,4,5,12,...
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 11 2006
STATUS
approved