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.

A201093 Triangle T(n,k), read by rows, given by (0,1,-1,-1,1,1,-1,-1,1,1,-1,-1,1,...) DELTA (1,0,0,0,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.

Table of values

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

List of values

[1, 0, 1, 0, 1, 1, 0, 0, 2, 1, 0, 1, 1, 3, 1, 0, 0, 2, 3, 4, 1, 0, 2, 2, 4, 6, 5, 1, 0, 0, 4, 6, 8, 10, 6, 1, 0, 5, 5, 9, 13, 15, 15, 7, 1, 0, 0, 10, 15, 20, 25, 26, 21, 8, 1, 0, 14, 14, 24, 34, 41, 45, 42, 28, 9, 1]