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.

A130020 Triangle T(n,k), 0<=k<=n, read by rows given by [1,0,0,0,0,0,0,...] DELTA [0,1,1,1,1,1,1,...] where DELTA is the operator defined in A084938 .

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 2
8 2
9 0
10 1
11 3
12 5
13 5
14 0
15 1
16 4
17 9
18 14
19 14
20 0
21 1
22 5
23 14
24 28
25 42
26 42
27 0
28 1
29 6
30 20
31 48
32 90
33 132
34 132
35 0
36 1
37 7
38 27
39 75
40 165
41 297
42 429
43 429
44 0
45 1
46 8
47 35
48 110
49 275
50 572
51 1001
52 1430
53 1430
54 0
55 1
56 9
57 44
58 154
59 429
60 1001
61 2002
62 3432
63 4862
64 4862
65 0

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 2, 0, 1, 3, 5, 5, 0, 1, 4, 9, 14, 14, 0, 1, 5, 14, 28, 42, 42, 0, 1, 6, 20, 48, 90, 132, 132, 0, 1, 7, 27, 75, 165, 297, 429, 429, 0, 1, 8, 35, 110, 275, 572, 1001, 1430, 1430, 0, 1, 9, 44, 154, 429, 1001, 2002, 3432, 4862, 4862, 0]