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.

A320196 Number of integer solutions to a^2 + 2*b^2 + 4*c^2 + 7*d^2 = n.

Table of values

n a(n)
0 1
1 2
2 2
3 4
4 4
5 4
6 8
7 10
8 10
9 10
10 16
11 12
12 16
13 28
14 16
15 20
16 24
17 24
18 18
19 28
20 32
21 8
22 40
23 32
24 24
25 34
26 32
27 32
28 34
29 56
30 20
31 40
32 42
33 40
34 64
35 56
36 32
37 32
38 72
39 28
40 72
41 64
42 32
43 60
44 72
45 84
46 36
47 88
48 56
49 66
50 98
51 40
52 80
53 40
54 80
55 104
56 68
57 44
58 40
59 92
60 52
61 116
62 80
63 42
64 72
65 100
66 96
67 84

List of values

[1, 2, 2, 4, 4, 4, 8, 10, 10, 10, 16, 12, 16, 28, 16, 20, 24, 24, 18, 28, 32, 8, 40, 32, 24, 34, 32, 32, 34, 56, 20, 40, 42, 40, 64, 56, 32, 32, 72, 28, 72, 64, 32, 60, 72, 84, 36, 88, 56, 66, 98, 40, 80, 40, 80, 104, 68, 44, 40, 92, 52, 116, 80, 42, 72, 100, 96, 84]

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

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