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.

A064368 Number of 2 X 2 symmetric singular matrices with entries from {0,...,n}.

Table of values

n a(n)
0 1
1 4
2 7
3 10
4 15
5 18
6 21
7 24
8 29
9 36
10 39
11 42
12 47
13 50
14 53
15 56
16 65
17 68
18 75
19 78
20 83
21 86
22 89
23 92
24 97
25 108
26 111
27 118
28 123
29 126
30 129
31 132
32 141
33 144
34 147
35 150
36 163
37 166
38 169
39 172
40 177
41 180
42 183
43 186
44 191
45 198
46 201
47 204
48 213
49 228
50 239
51 242
52 247
53 250
54 257
55 260
56 265
57 268

List of values

[1, 4, 7, 10, 15, 18, 21, 24, 29, 36, 39, 42, 47, 50, 53, 56, 65, 68, 75, 78, 83, 86, 89, 92, 97, 108, 111, 118, 123, 126, 129, 132, 141, 144, 147, 150, 163, 166, 169, 172, 177, 180, 183, 186, 191, 198, 201, 204, 213, 228, 239, 242, 247, 250, 257, 260, 265, 268]