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.

A363765 Lexicographically earliest sequence of numbers in a hexagonal spiral such that their neighbors have no common digit.

Table of values

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

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 44, 11, 20, 13, 22, 14, 23, 15, 24, 16, 25, 17, 26, 33, 27, 30, 28, 34, 55, 29, 40, 35, 60, 57, 46, 37, 18, 39, 47, 19, 36, 45, 70, 12, 48, 51, 49, 31, 50, 21, 38, 41, 53, 61, 42, 58, 32, 80, 52, 64, 59, 62, 81, 56, 43, 72]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.