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.

A180985 Array T(n,k) = number of n X k binary matrices with rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 2
2 3
3 3
4 4
5 7
6 4
7 5
8 14
9 14
10 5
11 6
12 25
13 45
14 25
15 6
16 7
17 41
18 130
19 130
20 41
21 7
22 8
23 63
24 336
25 650
26 336
27 63
28 8
29 9
30 92
31 785
32 2942
33 2942
34 785
35 92
36 9
37 10
38 129
39 1682
40 11819
41 24520
42 11819
43 1682
44 129
45 10
46 11
47 175
48 3351
49 42305
50 183010
51 183010
52 42305
53 3351
54 175
55 11
56 12
57 231
58 6280
59 136564

List of values

[2, 3, 3, 4, 7, 4, 5, 14, 14, 5, 6, 25, 45, 25, 6, 7, 41, 130, 130, 41, 7, 8, 63, 336, 650, 336, 63, 8, 9, 92, 785, 2942, 2942, 785, 92, 9, 10, 129, 1682, 11819, 24520, 11819, 1682, 129, 10, 11, 175, 3351, 42305, 183010, 183010, 42305, 3351, 175, 11, 12, 231, 6280, 136564]