A378103 - cp's OEIS frontend

A378103 Triangle read by rows: T(n,k) is the number of n-node connected unsensed planar maps with an external face and k triangular internal faces, n >= 3, 1 <= k <= 2*n - 5.

n	a(n)
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	2
11	1
12	0
13	0
14	2
15	4
16	4
17	5
18	4
19	0
20	0
21	2
22	6
23	10
24	14
25	14
26	18
27	16
28	0
29	0
30	0
31	7
32	18
33	35
34	49
35	63
36	69
37	88
38	78
39	0
40	0
41	0
42	5
43	28
44	74
45	131
46	204
47	274
48	345
49	396
50	489
51	457
52	0
53	0
54	0
55	0
56	26
57	126
58	304
59	574
60	893
61	1290
62	1708
63	2137
64	2503
65	3071
66	2938
67	0
68	0
69	0
70	0
71	13
72	159
73	582
74	1396
75	2613
76	4274
77	6270
78	8709
79	11433
80	14227
81	16905
82	20667
83	20118

[1, 0, 1, 1, 0, 1, 1, 2, 1, 0, 0, 2, 4, 4, 5, 4, 0, 0, 2, 6, 10, 14, 14, 18, 16, 0, 0, 0, 7, 18, 35, 49, 63, 69, 88, 78, 0, 0, 0, 5, 28, 74, 131, 204, 274, 345, 396, 489, 457, 0, 0, 0, 0, 26, 126, 304, 574, 893, 1290, 1708, 2137, 2503, 3071, 2938, 0, 0, 0, 0, 13, 159, 582, 1396, 2613, 4274, 6270, 8709, 11433, 14227, 16905, 20667, 20118]

cp's OEIS Frontend

A378103 Triangle read by rows: T(n,k) is the number of n-node connected unsensed planar maps with an external face and k triangular internal faces, n >= 3, 1 <= k <= 2*n - 5.

Table of values

List of values