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.

A064363 Number of 2 X 2 regular integer matrices with elements from {0,...,n} up to row and column permutation.

Table of values

n a(n)
0 0
1 2
2 14
3 51
4 133
5 289
6 547
7 954
8 1546
9 2380
10 3508
11 5005
12 6915
13 9347
14 12353
15 16028
16 20468
17 25790
18 32054
19 39427
20 47965
21 57833
22 69155
23 82082
24 96682
25 113192
26 131720
27 152429
28 175467
29 201075
30 229305
31 260492
32 294700
33 332182
34 373138
35 417751
36 466201

List of values

[0, 2, 14, 51, 133, 289, 547, 954, 1546, 2380, 3508, 5005, 6915, 9347, 12353, 16028, 20468, 25790, 32054, 39427, 47965, 57833, 69155, 82082, 96682, 113192, 131720, 152429, 175467, 201075, 229305, 260492, 294700, 332182, 373138, 417751, 466201]