1,2

Every positive integer occurs once and only once somewhere in this sequence.

Table of n, a(n) for n=1..72.

Index entries for sequences that are permutations of the natural numbers

Cf. A065562.

Sequence in context: A120234 A249571 A103865 * A304741 A280741 A255128

Adjacent sequences: A065576 A065577 A065578 * A065580 A065581 A065582

easy,nonn

N. J. A. Sloane, Nov 29 2001

More terms from John W. Layman, Jan 17 2002

More terms from David Wasserman, Aug 30 2002

approved