A294684 - cp's OEIS frontend

A294684 Triangle read by rows: T(n,k) is the number of non-isomorphic colorings of a toroidal n X k grid using exactly two colors under translational symmetry, 1 <= k <= n.

n	a(n)
1	0
2	1
3	5
4	2
5	12
6	62
7	4
8	38
9	350
10	4154
11	6
12	106
13	2190
14	52486
15	1342206
16	12
17	360
18	14622
19	699598
20	35792566
21	1908897150
22	18
23	1180
24	99878
25	9587578
26	981706830
27	104715443850
28	11488774559742
29	34
30	4148
31	699250
32	134223974
33	27487816990
34	5864063066498
35	1286742755471398
36	288230376353050814

[0, 1, 5, 2, 12, 62, 4, 38, 350, 4154, 6, 106, 2190, 52486, 1342206, 12, 360, 14622, 699598, 35792566, 1908897150, 18, 1180, 99878, 9587578, 981706830, 104715443850, 11488774559742, 34, 4148, 699250, 134223974, 27487816990, 5864063066498, 1286742755471398, 288230376353050814]

cp's OEIS Frontend

A294684 Triangle read by rows: T(n,k) is the number of non-isomorphic colorings of a toroidal n X k grid using exactly two colors under translational symmetry, 1 <= k <= n.

Table of values

List of values