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.

A188107 Triangle T(n,k) with the coefficient [x^k] of 1/(1 - x - 2*x^2 + x^3)^(n-k+1) in row n, column k.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 1
7 3
8 7
9 4
10 1
11 4
12 12
13 14
14 9
15 1
16 5
17 18
18 31
19 35
20 14
21 1
22 6
23 25
24 56
25 87
26 70
27 28
28 1
29 7
30 33
31 90
32 175
33 207
34 154
35 47
36 1
37 8
38 42
39 134
40 310
41 476
42 504
43 306
44 89
45 1
46 9
47 52
48 189
49 504
50 941
51 1274
52 1137
53 633
54 155
55 1
56 10
57 63
58 256
59 770
60 1680
61 2745
62 3188
63 2571

List of values

[1, 1, 1, 1, 2, 3, 1, 3, 7, 4, 1, 4, 12, 14, 9, 1, 5, 18, 31, 35, 14, 1, 6, 25, 56, 87, 70, 28, 1, 7, 33, 90, 175, 207, 154, 47, 1, 8, 42, 134, 310, 476, 504, 306, 89, 1, 9, 52, 189, 504, 941, 1274, 1137, 633, 155, 1, 10, 63, 256, 770, 1680, 2745, 3188, 2571]