A243716 - cp's OEIS frontend

A243716 Irregular triangle read by rows: T(n, k) = number of inequivalent (mod the dihedral group D_8 of order 8) ways to place k nonattacking knights on an n X n board.

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	3
7	7
8	9
9	6
10	2
11	3
12	18
13	40
14	66
15	49
16	30
17	8
18	3
19	6
20	43
21	195
22	609
23	1244
24	1767
25	1710
26	1148
27	510
28	154
29	31
30	6
31	1
32	6
33	83
34	618
35	3375
36	12329
37	32524
38	61731
39	86748
40	90059
41	70128
42	40770
43	18053
44	6089
45	1643
46	344
47	61
48	7
49	1
50	10
51	156
52	1751
53	14181
54	81900
55	348541

[1, 1, 2, 1, 1, 3, 7, 9, 6, 2, 3, 18, 40, 66, 49, 30, 8, 3, 6, 43, 195, 609, 1244, 1767, 1710, 1148, 510, 154, 31, 6, 1, 6, 83, 618, 3375, 12329, 32524, 61731, 86748, 90059, 70128, 40770, 18053, 6089, 1643, 344, 61, 7, 1, 10, 156, 1751, 14181, 81900, 348541]

cp's OEIS Frontend

A243716 Irregular triangle read by rows: T(n, k) = number of inequivalent (mod the dihedral group D_8 of order 8) ways to place k nonattacking knights on an n X n board.

Table of values

List of values