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.

A356120 Irregular triangle read by rows: the n-th row lists the values 0..2^n-1 representing all subsets of a set of n elements. When its elements are linearly ordered, the subsets are lexicographically ordered.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 2
5 3
6 1
7 0
8 4
9 6
10 7
11 5
12 2
13 3
14 1
15 0
16 8
17 12
18 14
19 15
20 13
21 10
22 11
23 9
24 4
25 6
26 7
27 5
28 2
29 3
30 1
31 0
32 16
33 24
34 28
35 30
36 31
37 29
38 26
39 27
40 25
41 20
42 22
43 23
44 21
45 18
46 19
47 17
48 8
49 12
50 14
51 15
52 13
53 10
54 11
55 9
56 4
57 6
58 7
59 5
60 2
61 3
62 1
63 0
64 32
65 48
66 56
67 60
68 62
69 63
70 61
71 58
72 59
73 57
74 52
75 54
76 55
77 53
78 50
79 51
80 49
81 40
82 44
83 46
84 47
85 45
86 42

List of values

[0, 0, 1, 0, 2, 3, 1, 0, 4, 6, 7, 5, 2, 3, 1, 0, 8, 12, 14, 15, 13, 10, 11, 9, 4, 6, 7, 5, 2, 3, 1, 0, 16, 24, 28, 30, 31, 29, 26, 27, 25, 20, 22, 23, 21, 18, 19, 17, 8, 12, 14, 15, 13, 10, 11, 9, 4, 6, 7, 5, 2, 3, 1, 0, 32, 48, 56, 60, 62, 63, 61, 58, 59, 57, 52, 54, 55, 53, 50, 51, 49, 40, 44, 46, 47, 45, 42]