A278688 - cp's OEIS frontend

A278688 Triangle read by rows T(n, k) = number of non-equivalent ways to place k non-attacking ferses on an n X n board.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	6
9	7
10	6
11	2
12	1
13	1
14	3
15	17
16	45
17	92
18	99
19	76
20	27
21	7
22	1
23	6
24	43
25	225
26	832
27	2102
28	3773
29	4860
30	4643
31	3356
32	1868
33	795
34	248
35	56
36	8
37	1
38	1
39	6
40	84
41	709
42	4500
43	19987
44	66201
45	164423
46	314224
47	465230
48	540247
49	492206
50	352300
51	195717
52	83247
53	26083
54	5754
55	780
56	55

[1, 1, 1, 1, 1, 1, 3, 6, 7, 6, 2, 1, 1, 3, 17, 45, 92, 99, 76, 27, 7, 1, 6, 43, 225, 832, 2102, 3773, 4860, 4643, 3356, 1868, 795, 248, 56, 8, 1, 1, 6, 84, 709, 4500, 19987, 66201, 164423, 314224, 465230, 540247, 492206, 352300, 195717, 83247, 26083, 5754, 780, 55]

cp's OEIS Frontend

A278688 Triangle read by rows T(n, k) = number of non-equivalent ways to place k non-attacking ferses on an n X n board.

Table of values

List of values