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.

A306717 Square array T(n, k) of positive integers, n > 0, k > 0, read by antidiagonals, filled the greedy way, such that for any i >= 0 and j >= 0 with i + j > 0, no three terms T(n, k), T(n+i, k+j), T(n+2*i, k+2*j) form an arithmetic progression.

Table of values

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

List of values

[1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 1, 3, 1, 1, 2, 1, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 4, 2, 3, 1, 1, 3, 2, 4, 4, 4, 5, 2, 1, 2, 5, 4, 4, 1, 4, 5, 4, 2, 2, 4, 5, 4, 1, 1, 1, 7, 2, 4, 3, 4, 2, 7, 1, 1, 2, 1, 2, 5, 4, 5, 5, 4, 5, 2, 1, 2, 1, 2, 5, 1, 5, 5, 4, 5, 5]