A007562 - cp's OEIS frontend

A007562 Number of planted trees where non-root, non-leaf nodes an even distance from root are of degree 2.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	6
7	10
8	20
9	36
10	72
11	137
12	275
13	541
14	1098
15	2208
16	4521
17	9240
18	19084
19	39451
20	82113
21	171240
22	358794
23	753460
24	1587740
25	3353192
26	7100909
27	15067924
28	32044456
29	68272854
30	145730675
31	311575140
32	667221030
33	1430892924
34	3072925944
35	6607832422
36	14226665499

[1, 1, 1, 2, 3, 6, 10, 20, 36, 72, 137, 275, 541, 1098, 2208, 4521, 9240, 19084, 39451, 82113, 171240, 358794, 753460, 1587740, 3353192, 7100909, 15067924, 32044456, 68272854, 145730675, 311575140, 667221030, 1430892924, 3072925944, 6607832422, 14226665499]

cp's OEIS Frontend

A007562 Number of planted trees where non-root, non-leaf nodes an even distance from root are of degree 2.

Table of values

List of values