A007560 - cp's OEIS frontend

A007560 Number of planted identity 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	1
5	2
6	2
7	4
8	6
9	10
10	17
11	29
12	51
13	89
14	159
15	284
16	512
17	930
18	1692
19	3101
20	5698
21	10515
22	19464
23	36143
24	67296
25	125622
26	235050
27	440756
28	828142
29	1558955
30	2939761
31	5552744
32	10504222
33	19899760
34	37750091
35	71704061
36	136361602
37	259618770
38	494821629
39	944074665

[1, 1, 1, 1, 2, 2, 4, 6, 10, 17, 29, 51, 89, 159, 284, 512, 930, 1692, 3101, 5698, 10515, 19464, 36143, 67296, 125622, 235050, 440756, 828142, 1558955, 2939761, 5552744, 10504222, 19899760, 37750091, 71704061, 136361602, 259618770, 494821629, 944074665]

cp's OEIS Frontend

A007560 Number of planted identity trees where non-root, non-leaf nodes an even distance from root are of degree 2.

Table of values

List of values