A120232 Inverse of A120231.

1, 3, 2, 6, 8, 4, 5, 12, 14, 7, 17, 18, 9, 21, 10, 11, 26, 27, 13, 30, 32, 15, 35, 16, 38, 39, 41, 19, 44, 20, 47, 48, 22, 23, 53, 24, 25, 57, 59, 60, 62, 28, 29, 66, 68, 31, 71, 72, 33, 75, 34, 78, 80, 36, 37, 84, 86, 87, 89, 40, 92, 93, 42, 43, 98, 99, 45, 102, 46, 105, 107

Offset

1,2

Comments

A permutation of the natural numbers.

Links

Table of n, a(n) for n=1..71.

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

Cf. A073675, A120230, A120231.

Sequence in context: A368150 A348686 A160855 * A292961 A019444 A195412

Adjacent sequences: A120229 A120230 A120231 * A120233 A120234 A120235

Keyword

nonn

Author

Clark Kimberling, Jun 11 2006

Status

approved