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.

A028957 Numbers represented by quadratic form with Gram matrix [ 2, 1; 1, 8 ] (divided by 2).

Table of values

n a(n)
1 0
2 1
3 4
4 6
5 9
6 10
7 15
8 16
9 19
10 24
11 25
12 31
13 34
14 36
15 40
16 46
17 49
18 51
19 54
20 60
21 61
22 64
23 69
24 76
25 79
26 81
27 85
28 90
29 94
30 96
31 100
32 106
33 109
34 114
35 115
36 121
37 124
38 135
39 136
40 139
41 141
42 144
43 150
44 151
45 159
46 160
47 166
48 169
49 171
50 181
51 184
52 186
53 190
54 196
55 199
56 204
57 211
58 214
59 216
60 225

List of values

[0, 1, 4, 6, 9, 10, 15, 16, 19, 24, 25, 31, 34, 36, 40, 46, 49, 51, 54, 60, 61, 64, 69, 76, 79, 81, 85, 90, 94, 96, 100, 106, 109, 114, 115, 121, 124, 135, 136, 139, 141, 144, 150, 151, 159, 160, 166, 169, 171, 181, 184, 186, 190, 196, 199, 204, 211, 214, 216, 225]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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