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.

A210291 Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >n.

Table of values

n a(n)
0 0
1 0
2 6
3 40
4 125
5 323
6 647
7 1235
8 2074
9 3337
10 5057
11 7477
12 10436
13 14490
14 19436
15 25591
16 33015
17 42259
18 52849
19 65833
20 80528
21 97909
22 117905
23 141163
24 166651
25 196474
26 229796
27 267289
28 308712
29 355766
30 406488
31 464094
32 526402
33 595477
34 670963

List of values

[0, 0, 6, 40, 125, 323, 647, 1235, 2074, 3337, 5057, 7477, 10436, 14490, 19436, 25591, 33015, 42259, 52849, 65833, 80528, 97909, 117905, 141163, 166651, 196474, 229796, 267289, 308712, 355766, 406488, 464094, 526402, 595477, 670963]