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.

A056557 Second tetrahedral coordinate.

Table of values

n a(n)
0 0
1 0
2 1
3 1
4 0
5 1
6 1
7 2
8 2
9 2
10 0
11 1
12 1
13 2
14 2
15 2
16 3
17 3
18 3
19 3
20 0
21 1
22 1
23 2
24 2
25 2
26 3
27 3
28 3
29 3
30 4
31 4
32 4
33 4
34 4
35 0
36 1
37 1
38 2
39 2
40 2
41 3
42 3
43 3
44 3
45 4
46 4
47 4
48 4
49 4
50 5
51 5
52 5
53 5
54 5
55 5
56 0
57 1
58 1
59 2
60 2
61 2
62 3
63 3
64 3
65 3
66 4
67 4
68 4
69 4
70 4
71 5
72 5
73 5
74 5
75 5
76 5
77 6
78 6
79 6
80 6
81 6
82 6
83 6
84 0
85 1
86 1
87 2
88 2
89 2
90 3
91 3
92 3
93 3
94 4
95 4
96 4
97 4
98 4
99 5
100 5
101 5
102 5
103 5
104 5

List of values

[0, 0, 1, 1, 0, 1, 1, 2, 2, 2, 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5]