A342987 - cp's OEIS frontend

A342987 Triangle read by rows: T(n,k) is the number of tree-rooted planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

n	a(n)
0	1
1	0
2	1
3	0
4	2
5	2
6	0
7	3
8	15
9	5
10	0
11	4
12	60
13	84
14	14
15	0
16	5
17	175
18	650
19	420
20	42
21	0
22	6
23	420
24	3324
25	5352
26	1980
27	132
28	0
29	7
30	882
31	13020
32	42469
33	37681
34	9009
35	429
36	0
37	8
38	1680
39	42240
40	246540
41	429120
42	239752
43	40040
44	1430
45	0
46	9
47	2970
48	118998
49	1142622
50	3462354
51	3711027
52	1421226
53	175032
54	4862

[1, 0, 1, 0, 2, 2, 0, 3, 15, 5, 0, 4, 60, 84, 14, 0, 5, 175, 650, 420, 42, 0, 6, 420, 3324, 5352, 1980, 132, 0, 7, 882, 13020, 42469, 37681, 9009, 429, 0, 8, 1680, 42240, 246540, 429120, 239752, 40040, 1430, 0, 9, 2970, 118998, 1142622, 3462354, 3711027, 1421226, 175032, 4862]

cp's OEIS Frontend

A342987 Triangle read by rows: T(n,k) is the number of tree-rooted planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

Table of values

List of values