A288954 - cp's OEIS frontend

A288954 Number of relaxed compacted binary trees of right height at most one with minimal sequences between branch nodes except before the first and after the last branch node on level 0.

n	a(n)
2	1
3	1
4	3
5	13
6	79
7	555
8	4605
9	42315
10	436275
11	4894155
12	60125625
13	794437875
14	11325612375
15	172141044075
16	2793834368325
17	48009995908875
18	874143494098875
19	16757439016192875
20	338309837281040625
21	7157757510792763875
22	158706419654857449375
23	3673441093896736036875

[1, 1, 3, 13, 79, 555, 4605, 42315, 436275, 4894155, 60125625, 794437875, 11325612375, 172141044075, 2793834368325, 48009995908875, 874143494098875, 16757439016192875, 338309837281040625, 7157757510792763875, 158706419654857449375, 3673441093896736036875]

cp's OEIS Frontend

A288954 Number of relaxed compacted binary trees of right height at most one with minimal sequences between branch nodes except before the first and after the last branch node on level 0.

Table of values

List of values