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.

A057149 Triangle T(n,k) of n X n binary matrices with k ones, with no zero rows or columns, up to row and column permutation.

Table of values

n a(n)
1 0
2 1
3 0
4 0
5 1
6 1
7 1
8 0
9 0
10 0
11 1
12 2
13 5
14 4
15 3
16 1
17 1
18 0
19 0
20 0
21 0
22 1
23 2
24 11
25 21
26 34
27 33
28 33
29 19
30 14
31 6
32 3
33 1
34 1
35 0
36 0
37 0
38 0
39 0
40 1
41 2
42 14
43 49
44 131
45 248
46 410
47 531
48 601
49 566
50 474
51 336
52 222
53 124
54 67
55 32
56 16
57 6
58 3
59 1
60 1
61 0
62 0
63 0
64 0
65 0
66 0
67 1
68 2
69 15
70 69
71 288
72 840
73 2144
74 4488
75 8317
76 13160

List of values

[0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 2, 5, 4, 3, 1, 1, 0, 0, 0, 0, 1, 2, 11, 21, 34, 33, 33, 19, 14, 6, 3, 1, 1, 0, 0, 0, 0, 0, 1, 2, 14, 49, 131, 248, 410, 531, 601, 566, 474, 336, 222, 124, 67, 32, 16, 6, 3, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2, 15, 69, 288, 840, 2144, 4488, 8317, 13160]