A342985 - cp's OEIS frontend

A342985 Triangle read by rows: T(n,k) is the number of tree-rooted loopless planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

n	a(n)
0	1
1	0
2	0
3	0
4	2
5	0
6	0
7	3
8	3
9	0
10	0
11	4
12	36
13	4
14	0
15	0
16	5
17	135
18	135
19	5
20	0
21	0
22	6
23	360
24	1368
25	360
26	6
27	0
28	0
29	7
30	798
31	7350
32	7350
33	798
34	7
35	0
36	0
37	8
38	1568
39	28400
40	73700
41	28400
42	1568
43	8
44	0
45	0
46	9
47	2826
48	89073
49	474588
50	474588
51	89073
52	2826
53	9
54	0
55	0
56	10
57	4770
58	241220
59	2292790
60	4818092
61	2292790
62	241220
63	4770
64	10
65	0

[1, 0, 0, 0, 2, 0, 0, 3, 3, 0, 0, 4, 36, 4, 0, 0, 5, 135, 135, 5, 0, 0, 6, 360, 1368, 360, 6, 0, 0, 7, 798, 7350, 7350, 798, 7, 0, 0, 8, 1568, 28400, 73700, 28400, 1568, 8, 0, 0, 9, 2826, 89073, 474588, 474588, 89073, 2826, 9, 0, 0, 10, 4770, 241220, 2292790, 4818092, 2292790, 241220, 4770, 10, 0]

cp's OEIS Frontend

A342985 Triangle read by rows: T(n,k) is the number of tree-rooted loopless planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

Table of values

List of values