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.

A232567 Number of non-equivalent binary n X n matrices with two nonadjacent 1's.

Table of values

n a(n)
1 0
2 1
3 6
4 17
5 43
6 84
7 159
8 262
9 426
10 635
11 940
12 1311
13 1821
14 2422
15 3213
16 4124
17 5284
18 6597
19 8226
20 10045
21 12255
22 14696
23 17611
24 20802
25 24558
26 28639
27 33384
28 38507
29 44401
30 50730
31 57945
32 65656
33 74376
34 83657
35 94078
36 105129
37 117459
38 130492
39 144951
40 160190
41 177010

List of values

[0, 1, 6, 17, 43, 84, 159, 262, 426, 635, 940, 1311, 1821, 2422, 3213, 4124, 5284, 6597, 8226, 10045, 12255, 14696, 17611, 20802, 24558, 28639, 33384, 38507, 44401, 50730, 57945, 65656, 74376, 83657, 94078, 105129, 117459, 130492, 144951, 160190, 177010]