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.

A278086 1/12 of the number of integer quadruples with sum = 3*n and sum of squares = 7*n^2.

Table of values

n a(n)
1 1
2 1
3 4
4 0
5 4
6 4
7 6
8 0
9 12
10 4
11 10
12 0
13 14
14 6
15 16
16 0
17 16
18 12
19 19
20 0
21 24
22 10
23 22
24 0
25 20
26 14
27 36
28 0
29 30
30 16
31 32
32 0
33 40
34 16
35 24
36 0
37 38
38 19
39 56
40 0
41 42
42 24
43 42
44 0
45 48
46 22
47 46
48 0
49 42
50 20
51 64
52 0
53 54
54 36
55 40
56 0
57 76
58 30
59 60
60 0
61 60
62 32
63 72
64 0
65 56
66 40
67 68
68 0
69 88
70 24
71 72
72 0
73 72
74 38
75 80
76 0
77 60
78 56
79 80
80 0
81 108
82 42
83 82
84 0
85 64
86 42
87 120
88 0
89 90
90 48
91 84
92 0
93 128
94 46
95 76
96 0
97 98
98 42
99 120
100 0

List of values

[1, 1, 4, 0, 4, 4, 6, 0, 12, 4, 10, 0, 14, 6, 16, 0, 16, 12, 19, 0, 24, 10, 22, 0, 20, 14, 36, 0, 30, 16, 32, 0, 40, 16, 24, 0, 38, 19, 56, 0, 42, 24, 42, 0, 48, 22, 46, 0, 42, 20, 64, 0, 54, 36, 40, 0, 76, 30, 60, 0, 60, 32, 72, 0, 56, 40, 68, 0, 88, 24, 72, 0, 72, 38, 80, 0, 60, 56, 80, 0, 108, 42, 82, 0, 64, 42, 120, 0, 90, 48, 84, 0, 128, 46, 76, 0, 98, 42, 120, 0]