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.

A001440 Number of symmetric Costas arrays of order n that are inequivalent under dihedral group.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 5
7 10
8 9
9 10
10 14
11 18
12 17
13 25
14 23
15 31
16 20
17 19
18 10
19 6
20 4
21 8
22 5
23 10
24 0
25 2
26 2
27 7
28 0
29 5
30 4
31 0
32 0

List of values

[1, 1, 1, 1, 2, 5, 10, 9, 10, 14, 18, 17, 25, 23, 31, 20, 19, 10, 6, 4, 8, 5, 10, 0, 2, 2, 7, 0, 5, 4, 0, 0]