A355911 Number of alt-unary-binary trees with n nodes.

1, 1, 2, 2, 2, 4, 4, 4, 4, 6, 8, 8, 8, 8, 8, 12, 12, 14, 16, 16, 16, 16, 16, 16, 24, 24, 24, 26, 28, 28, 32, 32, 32, 32, 32, 32, 32, 40

Offset: 1

Author

N. J. A. Sloane, Sep 19 2022

Keywords

• nonn
• more

Links

• Don Knuth, Ambidextrous Numbers, Preprint, September 2022. See (13.4).

Crossrefs

Cf. A355904-A355910, A355912, A355913.