cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A261597 Triangular array T(n, k) read by rows (n >= 1, 1 <= k <= n): row n gives the lexicographically earliest asymmetric characteristic solution to the n queens problem, or n zeros if no asymmetric characteristic solution exists. The k-th queen is placed in square (k, T(n, k)).

Table 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 1
12 3
13 5
14 2
15 4
16 0
17 0
18 0
19 0
20 0
21 0
22 1
23 3
24 5
25 7
26 2
27 4
28 6
29 1
30 5
31 8
32 6
33 3
34 7
35 2
36 4
37 1
38 3
39 6
40 8
41 2
42 4
43 9
44 7
45 5
46 1
47 3
48 6
49 8
50 10
51 5
52 9
53 2
54 4
55 7
56 1
57 3
58 5
59 7
60 9
61 11
62 2
63 4
64 6
65 8
66 10
67 1
68 3
69 5
70 8
71 10
72 12
73 6
74 11
75 2
76 7
77 9
78 4

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 5, 2, 4, 0, 0, 0, 0, 0, 0, 1, 3, 5, 7, 2, 4, 6, 1, 5, 8, 6, 3, 7, 2, 4, 1, 3, 6, 8, 2, 4, 9, 7, 5, 1, 3, 6, 8, 10, 5, 9, 2, 4, 7, 1, 3, 5, 7, 9, 11, 2, 4, 6, 8, 10, 1, 3, 5, 8, 10, 12, 6, 11, 2, 7, 9, 4]