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.

A199856 Triangle T(n,k), read by rows, given by (-1,3,0,0,0,0,0,0,0,0,0,...) DELTA (1,0,-1/3,1/3,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.

Table of values

n a(n)
0 1
1 -1
2 1
3 -2
4 1
5 1
6 -4
7 1
8 2
9 1
10 -8
11 0
12 4
13 3
14 1
15 -16
16 -4
17 7
18 8
19 4
20 1
21 -32
22 -16
23 10
24 19
25 13
26 5
27 1
28 -64
29 -48
30 8
31 41
32 37
33 19
34 6
35 1
36 -128
37 -128
38 -16
39 80
40 96
41 62
42 26
43 7
44 1
45 -256
46 -320
47 -112
48 136
49 231
50 183
51 95
52 34
53 8
54 1
55 -512
56 -768
57 -416
58 176
59 518
60 501
61 311
62 137
63 43
64 9
65 1

List of values

[1, -1, 1, -2, 1, 1, -4, 1, 2, 1, -8, 0, 4, 3, 1, -16, -4, 7, 8, 4, 1, -32, -16, 10, 19, 13, 5, 1, -64, -48, 8, 41, 37, 19, 6, 1, -128, -128, -16, 80, 96, 62, 26, 7, 1, -256, -320, -112, 136, 231, 183, 95, 34, 8, 1, -512, -768, -416, 176, 518, 501, 311, 137, 43, 9, 1]