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.

A235491 Self-inverse permutation of natural numbers: complementary pair ludic/nonludic numbers (A003309/A192607) entangled with the same pair in the opposite order, nonludic/ludic. See Formula.

Table of values

n a(n)
0 0
1 1
2 4
3 9
4 2
5 16
6 7
7 6
8 25
9 3
10 61
11 26
12 17
13 14
14 13
15 115
16 5
17 12
18 359
19 119
20 67
21 47
22 43
23 36
24 791
25 8
26 11
27 41
28 3017
29 81
30 811
31 407
32 247
33 227
34 179
35 7525
36 23
37 38
38 37
39 221
40 34015
41 27
42 503
43 22
44 7765
45 3509
46 1943
47 21
48 1777
49 1333
50 93625
51 97
52 193
53 146
54 181
55 1717
56 486721
57 121
58 4493
59 91
60 96839
61 10
62 40217
63 20813
64 89

List of values

[0, 1, 4, 9, 2, 16, 7, 6, 25, 3, 61, 26, 17, 14, 13, 115, 5, 12, 359, 119, 67, 47, 43, 36, 791, 8, 11, 41, 3017, 81, 811, 407, 247, 227, 179, 7525, 23, 38, 37, 221, 34015, 27, 503, 22, 7765, 3509, 1943, 21, 1777, 1333, 93625, 97, 193, 146, 181, 1717, 486721, 121, 4493, 91, 96839, 10, 40217, 20813, 89]