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.

A337389 Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of sqrt((1+(k-4)*x+sqrt(1-2*(k+4)*x+((k-4)*x)^2)) / (2 * (1-2*(k+4)*x+((k-4)*x)^2))).

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 3
5 6
6 1
7 4
8 19
9 20
10 1
11 5
12 34
13 141
14 70
15 1
16 6
17 51
18 328
19 1107
20 252
21 1
22 7
23 70
24 587
25 3334
26 8953
27 924
28 1
29 8
30 91
31 924
32 7123
33 34904
34 73789
35 3432
36 1
37 9
38 114
39 1345
40 12870
41 89055
42 372436
43 616227
44 12870
45 1
46 10
47 139
48 1856
49 20995
50 184756
51 1135005
52 4027216
53 5196627
54 48620

List of values

[1, 1, 2, 1, 3, 6, 1, 4, 19, 20, 1, 5, 34, 141, 70, 1, 6, 51, 328, 1107, 252, 1, 7, 70, 587, 3334, 8953, 924, 1, 8, 91, 924, 7123, 34904, 73789, 3432, 1, 9, 114, 1345, 12870, 89055, 372436, 616227, 12870, 1, 10, 139, 1856, 20995, 184756, 1135005, 4027216, 5196627, 48620]