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.

A125005 Numbers of orders of nontrivial positive magic-squares with magic sum n. A nontrivial positive magic square is a k-by-k array of consecutive positive integers (not necessarily including 1) such that all rows, all columns and the two diagonals each add up to the same constant (the "magic sum"), with the additional restriction that k (the "order") is greater than 1.

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 0
12 0
13 0
14 0
15 1
16 0
17 0
18 1
19 0
20 0
21 1
22 0
23 0
24 1
25 0
26 0
27 1
28 0
29 0
30 1
31 0
32 0
33 1
34 1
35 0
36 1
37 0
38 1
39 1
40 0
41 0
42 2
43 0
44 0
45 1
46 1
47 0
48 1
49 0
50 1
51 1
52 0
53 0
54 2
55 0
56 0
57 1
58 1
59 0
60 1
61 0
62 1
63 1
64 0
65 1
66 2
67 0
68 0
69 1
70 2
71 0
72 1
73 0
74 1
75 2
76 0
77 0
78 2
79 0
80 1
81 1
82 1
83 0
84 1
85 1
86 1
87 1
88 0
89 0
90 3
91 0
92 0
93 1
94 1
95 1
96 1
97 0
98 1
99 1
100 1
101 0
102 2
103 0
104 0
105 2

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 2, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 2, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 2, 0, 0, 1, 2, 0, 1, 0, 1, 2, 0, 0, 2, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 3, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 2, 0, 0, 2]