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.

A307447 Second coordinate of a contiguous path on the odd numbered points of a square lattice leading to a distance-limited bijection with the even numbered points of a square lattice rotated by Pi/6 around the common point (0,0). A307446 gives the first coordinate.

Table of values

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

List of values

[1, 1, 3, 5, 5, 5, 3, 3, 3, 5, 7, 7, 9, 11, 11, 11, 13, 15, 15, 17, 19, 19, 19, 17, 17, 17, 19, 21, 21, 21, 19, 19, 19, 17, 15, 15, 13, 11, 11, 11, 9, 9, 9, 11, 13, 13, 13, 11, 11, 11, 13, 15, 15, 17, 19, 19, 19, 21, 23, 23, 25, 27, 27, 27, 25, 25, 25, 27]

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

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