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.

A323212 The Fibonacci-Catalan Hybrid. Expansion of 1 + x*(2*(x + 1))/(sqrt(1 - 4*y) - 2*x*(x + 1) + 1). Square array read by descending antidiagonals, A(n,k) for n,k >= 0.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 2
6 0
7 2
8 3
9 3
10 0
11 5
12 7
13 7
14 5
15 0
16 14
17 19
18 19
19 15
20 8
21 0
22 42
23 56
24 56
25 46
26 30
27 13
28 0
29 132
30 174
31 174
32 146
33 103
34 58
35 21
36 0
37 429
38 561
39 561
40 477
41 351
42 220
43 109
44 34
45 0
46 1430
47 1859
48 1859
49 1595
50 1205
51 801
52 453
53 201
54 55
55 0
56 4862
57 6292
58 6292
59 5434
60 4180
61 2884
62 1756
63 908
64 365
65 89

List of values

[1, 0, 1, 0, 1, 2, 0, 2, 3, 3, 0, 5, 7, 7, 5, 0, 14, 19, 19, 15, 8, 0, 42, 56, 56, 46, 30, 13, 0, 132, 174, 174, 146, 103, 58, 21, 0, 429, 561, 561, 477, 351, 220, 109, 34, 0, 1430, 1859, 1859, 1595, 1205, 801, 453, 201, 55, 0, 4862, 6292, 6292, 5434, 4180, 2884, 1756, 908, 365, 89]