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.

A300454 Irregular triangle read by rows: row n consists of the coefficients of the expansion of the polynomial 2*(x + 1)^(n + 1) + x^3 + 2*x^2 - x - 2.

Table of values

n a(n)
0 0
1 1
2 2
3 1
4 0
5 3
6 4
7 1
8 0
9 5
10 8
11 3
12 0
13 7
14 14
15 9
16 2
17 0
18 9
19 22
20 21
21 10
22 2
23 0
24 11
25 32
26 41
27 30
28 12
29 2
30 0
31 13
32 44
33 71
34 70
35 42
36 14
37 2
38 0
39 15
40 58
41 113
42 140
43 112
44 56
45 16
46 2
47 0
48 17
49 74
50 169
51 252
52 252
53 168
54 72
55 18
56 2
57 0
58 19
59 92
60 241
61 420
62 504
63 420
64 240
65 90
66 20
67 2
68 0

List of values

[0, 1, 2, 1, 0, 3, 4, 1, 0, 5, 8, 3, 0, 7, 14, 9, 2, 0, 9, 22, 21, 10, 2, 0, 11, 32, 41, 30, 12, 2, 0, 13, 44, 71, 70, 42, 14, 2, 0, 15, 58, 113, 140, 112, 56, 16, 2, 0, 17, 74, 169, 252, 252, 168, 72, 18, 2, 0, 19, 92, 241, 420, 504, 420, 240, 90, 20, 2, 0]