A355910 Number of nodes at level n in the tree T_{-2}.

1, 1, 1, 2, 3, 4, 6, 9, 14, 21, 31, 47, 71, 106, 159, 239, 358, 537, 806, 1209, 1813, 2719, 4079, 6119

Offset

0,4

Comments

First differences of A355909.

Links

Table of n, a(n) for n=0..23.

Don Knuth, Ambidextrous Numbers, Preprint, September 2022. See (12.6).

Crossrefs

Cf. A355904-A355909, A355911-A355913.

Sequence in context: A078620 A073941 A005428 * A143951 A328262 A292800

Adjacent sequences: A355907 A355908 A355909 * A355911 A355912 A355913

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 19 2022

Status

approved