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.

A028955 Numbers represented by quadratic form with Gram matrix [ 4, 1; 1, 4 ] (divided by 2).

Table of values

n a(n)
1 0
2 2
3 3
4 5
5 8
6 12
7 17
8 18
9 20
10 23
11 27
12 30
13 32
14 38
15 45
16 47
17 48
18 50
19 53
20 57
21 62
22 68
23 72
24 75
25 80
26 83
27 92
28 93
29 95
30 98
31 102
32 107
33 108
34 113
35 120
36 122
37 125
38 128
39 137
40 138
41 147
42 152
43 153
44 155
45 158
46 162
47 167
48 170
49 173
50 180
51 183
52 188
53 192
54 197
55 200
56 207
57 212
58 218
59 227
60 228

List of values

[0, 2, 3, 5, 8, 12, 17, 18, 20, 23, 27, 30, 32, 38, 45, 47, 48, 50, 53, 57, 62, 68, 72, 75, 80, 83, 92, 93, 95, 98, 102, 107, 108, 113, 120, 122, 125, 128, 137, 138, 147, 152, 153, 155, 158, 162, 167, 170, 173, 180, 183, 188, 192, 197, 200, 207, 212, 218, 227, 228]

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

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