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.

A357022 Second coordinate y of points in the triangular lattice, sorted first by the distance from the origin and then by the circumferential angle phi restricted to the sector 0 <= phi < Pi/6. x is given in A357021.

Table of values

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

List of values

[0, 0, 1, 0, 1, 0, 2, 1, 0, 2, 1, 0, 3, 2, 1, 0, 3, 2, 1, 4, 0, 3, 2, 1, 4, 3, 0, 2, 1, 5, 4, 3, 0, 2, 1, 5, 4, 3, 0, 2, 6, 5, 1, 4, 3, 0, 2, 6, 5, 1, 4, 3, 0, 2, 7, 6, 5, 4, 1, 3, 0, 7, 6, 2, 5, 4, 1, 3, 8, 7, 0, 6, 2, 5, 4, 1, 3, 8, 7, 6, 0, 2, 5, 4, 1, 9, 8, 3]