A260318 - cp's OEIS frontend

A260318 Number of doubly symmetric characteristic solutions to the n-queens problem.

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	0
7	0
8	0
9	0
10	0
11	0
12	4
13	4
14	0
15	0
16	32
17	64
18	0
19	0
20	240
21	352
22	0
23	0
24	1664
25	1632
26	0
27	0
28	16448
29	21888
30	0
31	0
32	203392
33	333952
34	0
35	0
36	2922752
37	4325376
38	0
39	0
40	38592000
41	50746368
42	0
43	0
44	630794240
45	897616896
46	0
47	0
48	10758713344
49	17514086400
50	0
51	0
52	203437559808
53	326022221824
54	0
55	0
56	4306790547456
57	6265275064320
58	0
59	0
60	97204813266944
61	145913049251840
62	0
63	0

[1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 32, 64, 0, 0, 240, 352, 0, 0, 1664, 1632, 0, 0, 16448, 21888, 0, 0, 203392, 333952, 0, 0, 2922752, 4325376, 0, 0, 38592000, 50746368, 0, 0, 630794240, 897616896, 0, 0, 10758713344, 17514086400, 0, 0, 203437559808, 326022221824, 0, 0, 4306790547456, 6265275064320, 0, 0, 97204813266944, 145913049251840, 0, 0]

cp's OEIS Frontend

A260318 Number of doubly symmetric characteristic solutions to the n-queens problem.

Table of values

List of values