cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A321572 Related to the set of Motzkin trees where all leaves are at the same unary height 2.

Table of values

n a(n)
0 0
1 1
2 0
3 1
4 1
5 3
6 2
7 9
8 7
9 27
10 25
11 85
12 86
13 287
14 296
15 975
16 1065
17 3369
18 3825
19 11887
20 13836
21 42389
22 50597
23 152549
24 186186
25 554103
26 688494
27 2027304
28 2559958
29 7461971
30 9561298
31 27617581
32 35846863
33 102707431
34 134874639
35 383561963
36 509090498
37 1437822479
38 1927045425

List of values

[0, 1, 0, 1, 1, 3, 2, 9, 7, 27, 25, 85, 86, 287, 296, 975, 1065, 3369, 3825, 11887, 13836, 42389, 50597, 152549, 186186, 554103, 688494, 2027304, 2559958, 7461971, 9561298, 27617581, 35846863, 102707431, 134874639, 383561963, 509090498, 1437822479, 1927045425]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.