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.

A007754 Array (a frieze pattern) defined by a(n,k) = (a(n-1,k)*a(n-1,k+1) - 1) / a(n-2,k+1), read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 3
8 5
9 2
10 1
11 4
12 11
13 18
14 7
15 1
16 5
17 19
18 52
19 85
20 33
21 1
22 6
23 29
24 110
25 301
26 492
27 191
28 1
29 7
30 41
31 198
32 751
33 2055
34 3359
35 1304
36 1
37 8
38 55
39 322
40 1555
41 5898
42 16139
43 26380
44 10241
45 1
46 9
47 71
48 488
49 2857
50 13797
51 52331
52 143196
53 234061
54 90865
55 1
56 10
57 89
58 702

List of values

[1, 1, 1, 1, 2, 1, 1, 3, 5, 2, 1, 4, 11, 18, 7, 1, 5, 19, 52, 85, 33, 1, 6, 29, 110, 301, 492, 191, 1, 7, 41, 198, 751, 2055, 3359, 1304, 1, 8, 55, 322, 1555, 5898, 16139, 26380, 10241, 1, 9, 71, 488, 2857, 13797, 52331, 143196, 234061, 90865, 1, 10, 89, 702]