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.

A274706 Irregular triangle read by rows. T(n,k) (n >= 0) is a statistic on orbital systems over n sectors: the number of orbitals which have an integral whose absolute value is k.

Table of values

n a(n)
0 1
1 1
2 0
3 2
4 0
5 4
6 2
7 2
8 0
9 2
10 0
11 2
12 6
13 4
14 6
15 4
16 4
17 4
18 2
19 0
20 6
21 0
22 6
23 0
24 4
25 0
26 2
27 0
28 2
29 6
30 24
31 16
32 20
33 14
34 16
35 12
36 8
37 6
38 8
39 4
40 4
41 2
42 8
43 0
44 14
45 0
46 14
47 0
48 10
49 0
50 10
51 0
52 6
53 0
54 4
55 0
56 2
57 0
58 2
59 36
60 52
61 68
62 48
63 64
64 48
65 48
66 40
67 44
68 32
69 36
70 24
71 22
72 16
73 16
74 8
75 10
76 8
77 4
78 4
79 2

List of values

[1, 1, 0, 2, 0, 4, 2, 2, 0, 2, 0, 2, 6, 4, 6, 4, 4, 4, 2, 0, 6, 0, 6, 0, 4, 0, 2, 0, 2, 6, 24, 16, 20, 14, 16, 12, 8, 6, 8, 4, 4, 2, 8, 0, 14, 0, 14, 0, 10, 0, 10, 0, 6, 0, 4, 0, 2, 0, 2, 36, 52, 68, 48, 64, 48, 48, 40, 44, 32, 36, 24, 22, 16, 16, 8, 10, 8, 4, 4, 2]