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.

A349407 The Farkas map: a(n) = x/3 if x mod 3 = 0; a(n) = (3x+1)/2 if x mod 3 <> 0 and x mod 4 = 3; a(n) = (x+1)/2 if x mod 3 <> 0 and x mod 4 = 1, where x = 2*n-1.

Table of values

n a(n)
1 1
2 1
3 3
4 11
5 3
6 17
7 7
8 5
9 9
10 29
11 7
12 35
13 13
14 9
15 15
16 47
17 11
18 53
19 19
20 13
21 21
22 65
23 15
24 71
25 25
26 17
27 27
28 83
29 19
30 89
31 31
32 21
33 33
34 101
35 23
36 107
37 37
38 25
39 39
40 119
41 27
42 125
43 43
44 29
45 45
46 137
47 31
48 143
49 49
50 33
51 51
52 155
53 35
54 161
55 55
56 37
57 57
58 173
59 39
60 179
61 61
62 41
63 63
64 191
65 43

List of values

[1, 1, 3, 11, 3, 17, 7, 5, 9, 29, 7, 35, 13, 9, 15, 47, 11, 53, 19, 13, 21, 65, 15, 71, 25, 17, 27, 83, 19, 89, 31, 21, 33, 101, 23, 107, 37, 25, 39, 119, 27, 125, 43, 29, 45, 137, 31, 143, 49, 33, 51, 155, 35, 161, 55, 37, 57, 173, 39, 179, 61, 41, 63, 191, 43]

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

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