A091599 - cp's OEIS frontend

A091599 Triangle read by rows: T(n,k) is the number of nonseparable planar maps with rn edges and a fixed outer face of rk edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r).

n	a(n)
1	1
2	2
3	1
4	6
5	6
6	1
7	24
8	26
9	12
10	1
11	110
12	120
13	75
14	20
15	1
16	546
17	594
18	416
19	174
20	30
21	1
22	2856
23	3094
24	2289
25	1176
26	350
27	42
28	1
29	15504
30	16728
31	12768
32	7322
33	2880
34	636
35	56
36	1
37	86526
38	93024
39	72420
40	44388
41	20475
42	6324
43	1071
44	72
45	1
46	493350
47	528770
48	417240
49	267240
50	136252
51	51495
52	12740
53	1700
54	90
55	1

[1, 2, 1, 6, 6, 1, 24, 26, 12, 1, 110, 120, 75, 20, 1, 546, 594, 416, 174, 30, 1, 2856, 3094, 2289, 1176, 350, 42, 1, 15504, 16728, 12768, 7322, 2880, 636, 56, 1, 86526, 93024, 72420, 44388, 20475, 6324, 1071, 72, 1, 493350, 528770, 417240, 267240, 136252, 51495, 12740, 1700, 90, 1]

cp's OEIS Frontend

A091599 Triangle read by rows: T(n,k) is the number of nonseparable planar maps with rn edges and a fixed outer face of rk edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r).

Table of values

List of values

cp's OEIS Frontend

A091599 Triangle read by rows: T(n,k) is the number of nonseparable planar maps with r*n edges and a fixed outer face of r*k edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r).

Table of values

List of values

A091599 Triangle read by rows: T(n,k) is the number of nonseparable planar maps with rn edges and a fixed outer face of rk edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r).