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.

A350355 Numbers k such that the k-th composition in standard order is up/down.

Table of values

n a(n)
1 0
2 1
3 2
4 4
5 6
6 8
7 12
8 13
9 16
10 20
11 24
12 25
13 32
14 40
15 41
16 48
17 49
18 50
19 54
20 64
21 72
22 80
23 81
24 82
25 96
26 97
27 98
28 102
29 108
30 109
31 128
32 144
33 145
34 160
35 161
36 162
37 166
38 192
39 193
40 194
41 196
42 198
43 204
44 205
45 216
46 217
47 256
48 272
49 288
50 289
51 290
52 320
53 321
54 322
55 324
56 326
57 332
58 333
59 384

List of values

[0, 1, 2, 4, 6, 8, 12, 13, 16, 20, 24, 25, 32, 40, 41, 48, 49, 50, 54, 64, 72, 80, 81, 82, 96, 97, 98, 102, 108, 109, 128, 144, 145, 160, 161, 162, 166, 192, 193, 194, 196, 198, 204, 205, 216, 217, 256, 272, 288, 289, 290, 320, 321, 322, 324, 326, 332, 333, 384]