A340811 - cp's OEIS frontend

A340811 Array read by antidiagonals: T(n,k) is the number of unlabeled k-gonal 2-trees with n polygons, n >= 0, k >= 2.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	1
13	2
14	3
15	1
16	1
17	1
18	3
19	5
20	6
21	1
22	1
23	1
24	3
25	8
26	12
27	11
28	1
29	1
30	1
31	4
32	11
33	32
34	39
35	23
36	1
37	1
38	1
39	4
40	16
41	56
42	141
43	136
44	47
45	1
46	1
47	1
48	5
49	20
50	103
51	359
52	749
53	529
54	106
55	1
56	1
57	1
58	5
59	26
60	158
61	799
62	2597
63	4304
64	2171
65	235
66	1
67	1
68	1
69	6
70	32
71	245
72	1539
73	7286
74	20386
75	26492
76	9368
77	551

[1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 1, 1, 3, 5, 6, 1, 1, 1, 3, 8, 12, 11, 1, 1, 1, 4, 11, 32, 39, 23, 1, 1, 1, 4, 16, 56, 141, 136, 47, 1, 1, 1, 5, 20, 103, 359, 749, 529, 106, 1, 1, 1, 5, 26, 158, 799, 2597, 4304, 2171, 235, 1, 1, 1, 6, 32, 245, 1539, 7286, 20386, 26492, 9368, 551]

cp's OEIS Frontend

A340811 Array read by antidiagonals: T(n,k) is the number of unlabeled k-gonal 2-trees with n polygons, n >= 0, k >= 2.

Table of values

List of values