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.

A200068 Irregular triangle read by rows: T(n,k), n>=0, 0<=k<=A200067(n), is number of compositions of n such that the sum of weighted inversions equals k and weights are products of absolute differences and distances between the element pairs which are not in sorted order.

Table of values

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

List of values

[1, 1, 2, 3, 1, 5, 1, 1, 1, 7, 3, 1, 3, 0, 0, 2, 11, 4, 2, 4, 3, 1, 3, 0, 1, 1, 1, 0, 1, 15, 8, 3, 8, 3, 3, 7, 1, 2, 3, 1, 3, 2, 0, 1, 2, 0, 0, 1, 0, 1, 22, 11, 7, 12, 4, 5, 13, 5, 4, 7, 4, 4, 5, 0, 3, 6, 2, 1, 2, 1, 2, 3, 0, 0, 2, 1, 0, 0, 0, 0, 2]