A332648 - cp's OEIS frontend

A332648 Array read by antidiagonals: T(n,k) is the number of rooted unlabeled k-gonal cacti having n polygons.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	2
13	4
14	1
15	1
16	1
17	3
18	5
19	9
20	1
21	1
22	1
23	3
24	11
25	13
26	20
27	1
28	1
29	1
30	4
31	13
32	46
33	37
34	48
35	1
36	1
37	1
38	4
39	22
40	62
41	208
42	111
43	115
44	1
45	1
46	1
47	5
48	25
49	140
50	333
51	1002
52	345
53	286
54	1
55	1
56	1
57	5
58	37
59	176
60	985
61	1894
62	5012
63	1105
64	719
65	1
66	1
67	1
68	6
69	41
70	319
71	1397
72	7374
73	11258
74	25863
75	3624
76	1842
77	1

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 4, 1, 1, 1, 3, 5, 9, 1, 1, 1, 3, 11, 13, 20, 1, 1, 1, 4, 13, 46, 37, 48, 1, 1, 1, 4, 22, 62, 208, 111, 115, 1, 1, 1, 5, 25, 140, 333, 1002, 345, 286, 1, 1, 1, 5, 37, 176, 985, 1894, 5012, 1105, 719, 1, 1, 1, 6, 41, 319, 1397, 7374, 11258, 25863, 3624, 1842, 1]

cp's OEIS Frontend

A332648 Array read by antidiagonals: T(n,k) is the number of rooted unlabeled k-gonal cacti having n polygons.

Table of values

List of values