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.

A099173 Array, A(k,n), read by diagonals: g.f. of k-th row x/(1-2*x-(k-1)*x^2).

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 1
5 2
6 0
7 1
8 2
9 3
10 0
11 1
12 2
13 4
14 4
15 0
16 1
17 2
18 5
19 8
20 5
21 0
22 1
23 2
24 6
25 12
26 16
27 6
28 0
29 1
30 2
31 7
32 16
33 29
34 32
35 7
36 0
37 1
38 2
39 8
40 20
41 44
42 70
43 64
44 8
45 0
46 1
47 2
48 9
49 24
50 61
51 120
52 169
53 128
54 9
55 0
56 1
57 2
58 10
59 28
60 80
61 182
62 328
63 408
64 256
65 10
66 0
67 1
68 2
69 11
70 32
71 101
72 256
73 547
74 896
75 985
76 512
77 11

List of values

[0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 4, 4, 0, 1, 2, 5, 8, 5, 0, 1, 2, 6, 12, 16, 6, 0, 1, 2, 7, 16, 29, 32, 7, 0, 1, 2, 8, 20, 44, 70, 64, 8, 0, 1, 2, 9, 24, 61, 120, 169, 128, 9, 0, 1, 2, 10, 28, 80, 182, 328, 408, 256, 10, 0, 1, 2, 11, 32, 101, 256, 547, 896, 985, 512, 11]