A347018 - cp's OEIS frontend

A347018 The number of unlabeled trees T on n vertices for which maximum multiplicity attained by any matrix whose graph is T implies the simplicity of its other eigenvalues.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	5
7	8
8	14
9	24
10	43
11	74
12	134
13	238
14	433
15	778
16	1416
17	2564
18	4676
19	8498
20	15507
21	28246
22	51568
23	94049
24	171734
25	313417
26	572377
27	1044986
28	1908527
29	3485092
30	6365294
31	11624741
32	21232255
33	38778177
34	70828006
35	129363233
36	236282260
37	431563697
38	788254745
39	1439742242

[1, 1, 1, 2, 3, 5, 8, 14, 24, 43, 74, 134, 238, 433, 778, 1416, 2564, 4676, 8498, 15507, 28246, 51568, 94049, 171734, 313417, 572377, 1044986, 1908527, 3485092, 6365294, 11624741, 21232255, 38778177, 70828006, 129363233, 236282260, 431563697, 788254745, 1439742242]

cp's OEIS Frontend

A347018 The number of unlabeled trees T on n vertices for which maximum multiplicity attained by any matrix whose graph is T implies the simplicity of its other eigenvalues.

Table of values

List of values