A261596 - cp's OEIS frontend

A261596 Triangular array T(n, k) read by rows (n >= 1, 1 <= k <= n): row n gives the lexicographically earliest symmetric characteristic solution to the n queens problem, or n zeros if no symmetric characteristic solution exists. The k-th queen is placed in square (k, T(n, k)).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	2
17	4
18	6
19	1
20	3
21	5
22	2
23	5
24	1
25	4
26	7
27	3
28	6
29	3
30	5
31	2
32	8
33	1
34	7
35	4
36	6
37	2
38	4
39	9
40	7
41	5
42	3
43	1
44	6
45	8
46	2
47	4
48	6
49	8
50	10
51	1
52	3
53	5
54	7
55	9

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 6, 1, 3, 5, 2, 5, 1, 4, 7, 3, 6, 3, 5, 2, 8, 1, 7, 4, 6, 2, 4, 9, 7, 5, 3, 1, 6, 8, 2, 4, 6, 8, 10, 1, 3, 5, 7, 9]

cp's OEIS Frontend

A261596 Triangular array T(n, k) read by rows (n >= 1, 1 <= k <= n): row n gives the lexicographically earliest symmetric characteristic solution to the n queens problem, or n zeros if no symmetric characteristic solution exists. The k-th queen is placed in square (k, T(n, k)).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	2
17	4
18	6
19	1
20	3
21	5
22	2
23	5
24	1
25	4
26	7
27	3
28	6
29	3
30	5
31	2
32	8
33	1
34	7
35	4
36	6
37	2
38	4
39	9
40	7
41	5
42	3
43	1
44	6
45	8
46	2
47	4
48	6
49	8
50	10
51	1
52	3
53	5
54	7
55	9

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	2
17	4
18	6
19	1
20	3
21	5
22	2
23	5
24	1
25	4
26	7
27	3
28	6
29	3
30	5
31	2
32	8
33	1
34	7
35	4
36	6
37	2
38	4
39	9
40	7
41	5
42	3
43	1
44	6
45	8
46	2
47	4
48	6
49	8
50	10
51	1
52	3
53	5
54	7
55	9

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	2
17	4
18	6
19	1
20	3
21	5
22	2
23	5
24	1
25	4
26	7
27	3
28	6
29	3
30	5
31	2
32	8
33	1
34	7
35	4
36	6
37	2
38	4
39	9
40	7
41	5
42	3
43	1
44	6
45	8
46	2
47	4
48	6
49	8
50	10
51	1
52	3
53	5
54	7
55	9