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.

A151885 Similar to the original toothpick sequence A139250, except that the rule is now: a toothpick changes state if its midpoint is adjacent to exactly one ON toothpick.

Table of values

n a(n)
0 0
1 1
2 3
3 5
4 11
5 5
6 15
7 17
8 39
9 5
10 15
11 25
12 55
13 17
14 51
15 61
16 139
17 5
18 15
19 25
20 55
21 25
22 75
23 85
24 195
25 17
26 51
27 85
28 187
29 61
30 183
31 217
32 495
33 5
34 15
35 25
36 55
37 25
38 75
39 85
40 195
41 25
42 75
43 125
44 275
45 85
46 255
47 305
48 695
49 17
50 51
51 85
52 187
53 85
54 255
55 289
56 663

List of values

[0, 1, 3, 5, 11, 5, 15, 17, 39, 5, 15, 25, 55, 17, 51, 61, 139, 5, 15, 25, 55, 25, 75, 85, 195, 17, 51, 85, 187, 61, 183, 217, 495, 5, 15, 25, 55, 25, 75, 85, 195, 25, 75, 125, 275, 85, 255, 305, 695, 17, 51, 85, 187, 85, 255, 289, 663]

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

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