A055356 - cp's OEIS frontend

A055356 Triangle of increasing mobiles (circular rooted trees) with n nodes and k leaves.

n	a(n)
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	4
9	2
10	0
11	1
12	11
13	18
14	6
15	0
16	1
17	26
18	98
19	96
20	24
21	0
22	1
23	57
24	424
25	874
26	600
27	120
28	0
29	1
30	120
31	1614
32	6040
33	8244
34	4320
35	720
36	0
37	1
38	247
39	5682
40	35458
41	83500
42	83628
43	35280
44	5040
45	0
46	1
47	502
48	19022
49	187288
50	701164
51	1169768
52	915984
53	322560
54	40320
55	0
56	1

[1, 1, 0, 1, 1, 0, 1, 4, 2, 0, 1, 11, 18, 6, 0, 1, 26, 98, 96, 24, 0, 1, 57, 424, 874, 600, 120, 0, 1, 120, 1614, 6040, 8244, 4320, 720, 0, 1, 247, 5682, 35458, 83500, 83628, 35280, 5040, 0, 1, 502, 19022, 187288, 701164, 1169768, 915984, 322560, 40320, 0, 1]

cp's OEIS Frontend

A055356 Triangle of increasing mobiles (circular rooted trees) with n nodes and k leaves.

Table of values

List of values