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.

A144260 Number of symmetric n X n binary matrices with each element equal to one minus the sum of its horizontal and vertical neighbors, modulo two.

Table of values

n a(n)
1 1
2 1
3 1
4 4
5 2
6 1
7 1
8 1
9 16
10 1
11 8
12 1
13 1
14 4
15 1
16 16
17 2
18 1
19 256
20 1
21 1
22 1
23 128
24 4
25 1
26 1
27 1
28 1

List of values

[1, 1, 1, 4, 2, 1, 1, 1, 16, 1, 8, 1, 1, 4, 1, 16, 2, 1, 256, 1, 1, 1, 128, 4, 1, 1, 1, 1]