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.

A323224 A(n, k) = [x^k] C^n*x/(1 - x) where C = 2/(1 + sqrt(1 - 4*x)), square array read by ascending antidiagonals with n >= 0 and k >= 0.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 1
5 1
6 0
7 1
8 2
9 1
10 0
11 1
12 3
13 4
14 1
15 0
16 1
17 4
18 8
19 9
20 1
21 0
22 1
23 5
24 13
25 22
26 23
27 1
28 0
29 1
30 6
31 19
32 41
33 64
34 65
35 1
36 0
37 1
38 7
39 26
40 67
41 131
42 196
43 197
44 1
45 0
46 1
47 8
48 34
49 101
50 232
51 428
52 625
53 626
54 1
55 0
56 1
57 9
58 43
59 144
60 376
61 804
62 1429
63 2055
64 2056
65 1

List of values

[0, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 3, 4, 1, 0, 1, 4, 8, 9, 1, 0, 1, 5, 13, 22, 23, 1, 0, 1, 6, 19, 41, 64, 65, 1, 0, 1, 7, 26, 67, 131, 196, 197, 1, 0, 1, 8, 34, 101, 232, 428, 625, 626, 1, 0, 1, 9, 43, 144, 376, 804, 1429, 2055, 2056, 1]