1,2

1 and permutation(?) of even integers. Cf. A074928

Table of n, a(n) for n=1..66.

Cf. A074928.

Sequence in context: A074259 A113540 A111658 * A107647 A210842 A245777

Adjacent sequences: A105689 A105690 A105691 * A105693 A105694 A105695

nonn

Zak Seidov, Apr 17 2005

approved