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.

A226619 Irregular array read by rows in which row n lists the integers k, in ascending order, for which there is a primitive cycle of n positive integers under iteration by the Collatz-like 3x+k function.

Table of values

n a(n)
1 -1
2 1
3 1
4 -1
5 5
6 -11
7 7
8 13
9 -49
10 5
11 23
12 29
13 -179
14 -17
15 11
16 37
17 55
18 61
19 -601
20 -115
21 17
22 47
23 101
24 119
25 125
26 -1931
27 -473
28 13
29 25
30 35
31 175
32 229
33 247
34 253
35 -6049
36 -1675
37 -217
38 -31
39 97
40 269
41 431
42 485
43 503
44 509
45 -18659
46 -5537
47 -1163
48 -791
49 59
50 71
51 145
52 203
53 295
54 781
55 943
56 997
57 1015
58 1021

List of values

[-1, 1, 1, -1, 5, -11, 7, 13, -49, 5, 23, 29, -179, -17, 11, 37, 55, 61, -601, -115, 17, 47, 101, 119, 125, -1931, -473, 13, 25, 35, 175, 229, 247, 253, -6049, -1675, -217, -31, 97, 269, 431, 485, 503, 509, -18659, -5537, -1163, -791, 59, 71, 145, 203, 295, 781, 943, 997, 1015, 1021]