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.

A357213 Triangular array read by rows: T(n, k) = number of subsets s of {1, 2, ..., n} such max(s) - min(s) = k, for n >= 1, 0 <= k <= n-1.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 2
6 2
7 4
8 3
9 4
10 4
11 5
12 4
13 6
14 8
15 8
16 6
17 5
18 8
19 12
20 16
21 16
22 7
23 6
24 10
25 16
26 24
27 32
28 32
29 8
30 7
31 12
32 20
33 32
34 48
35 64
36 64
37 9
38 8
39 14
40 24
41 40
42 64
43 96
44 128
45 128
46 10
47 9
48 16
49 28
50 48
51 80
52 128
53 192
54 256
55 256
56 11
57 10
58 18
59 32
60 56
61 96
62 160
63 256
64 384
65 512
66 512
67 12
68 11

List of values

[1, 2, 1, 3, 2, 2, 4, 3, 4, 4, 5, 4, 6, 8, 8, 6, 5, 8, 12, 16, 16, 7, 6, 10, 16, 24, 32, 32, 8, 7, 12, 20, 32, 48, 64, 64, 9, 8, 14, 24, 40, 64, 96, 128, 128, 10, 9, 16, 28, 48, 80, 128, 192, 256, 256, 11, 10, 18, 32, 56, 96, 160, 256, 384, 512, 512, 12, 11]