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.

A110135 Square array of expansions of 1/sqrt(1-4x-4*k*x^2), read by antidiagonals.

Table of values

n a(n)
0 1
1 2
2 1
3 6
4 2
5 1
6 20
7 8
8 2
9 1
10 70
11 32
12 10
13 2
14 1
15 252
16 136
17 44
18 12
19 2
20 1
21 924
22 592
23 214
24 56
25 14
26 2
27 1
28 3432
29 2624
30 1052
31 304
32 68
33 16
34 2
35 1
36 12870
37 11776
38 5284
39 1632
40 406
41 80
42 18
43 2
44 1
45 48620
46 53344
47 26840
48 9024
49 2332
50 520
51 92
52 20
53 2
54 1
55 184756
56 243392
57 137638
58 50304

List of values

[1, 2, 1, 6, 2, 1, 20, 8, 2, 1, 70, 32, 10, 2, 1, 252, 136, 44, 12, 2, 1, 924, 592, 214, 56, 14, 2, 1, 3432, 2624, 1052, 304, 68, 16, 2, 1, 12870, 11776, 5284, 1632, 406, 80, 18, 2, 1, 48620, 53344, 26840, 9024, 2332, 520, 92, 20, 2, 1, 184756, 243392, 137638, 50304]