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.

A122950 Triangle T(n,k), 0 <= k <= n, read by rows, given by [0, 0, 1, -1, 0, 0, 0, 0, 0, 0, ...] DELTA [1, 1, -1, 0, 0, 0, 0, 0, 0, ...] where DELTA is the operator defined in A084938.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 0
5 2
6 0
7 0
8 1
9 3
10 0
11 0
12 0
13 3
14 5
15 0
16 0
17 0
18 1
19 7
20 8
21 0
22 0
23 0
24 0
25 4
26 15
27 13
28 0
29 0
30 0
31 0
32 1
33 12
34 30
35 21
36 0
37 0
38 0
39 0
40 0
41 5
42 31
43 58
44 34
45 0
46 0
47 0
48 0
49 0
50 1
51 18
52 73
53 109
54 55
55 0
56 0
57 0
58 0
59 0
60 0
61 6
62 54
63 162
64 201
65 89
66 0
67 0
68 0
69 0
70 0
71 0
72 1
73 25
74 145
75 344
76 365
77 144
78 0
79 0
80 0
81 0
82 0
83 0
84 0
85 7
86 85
87 361
88 707

List of values

[1, 0, 1, 0, 0, 2, 0, 0, 1, 3, 0, 0, 0, 3, 5, 0, 0, 0, 1, 7, 8, 0, 0, 0, 0, 4, 15, 13, 0, 0, 0, 0, 1, 12, 30, 21, 0, 0, 0, 0, 0, 5, 31, 58, 34, 0, 0, 0, 0, 0, 1, 18, 73, 109, 55, 0, 0, 0, 0, 0, 0, 6, 54, 162, 201, 89, 0, 0, 0, 0, 0, 0, 1, 25, 145, 344, 365, 144, 0, 0, 0, 0, 0, 0, 0, 7, 85, 361, 707]