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.

A380128 Triangle read by rows: Riordan array (1/(C(x)*sqrt(1-4*x)), x/C(x)) where C(x) is g.f. of A000108.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 0
5 1
6 10
7 1
8 -1
9 1
10 35
11 4
12 0
13 -2
14 1
15 126
16 15
17 1
18 0
19 -3
20 1
21 462
22 56
23 5
24 0
25 1
26 -4
27 1
28 1716
29 210
30 21
31 1
32 0
33 3
34 -5
35 1
36 6435
37 792
38 84
39 6
40 0
41 0
42 6
43 -6
44 1
45 24310
46 3003
47 330
48 28
49 1
50 0
51 -1
52 10
53 -7
54 1
55 92378
56 11440
57 1287
58 120
59 7
60 0
61 0
62 -4
63 15
64 -8
65 1
66 352716
67 43758
68 5005
69 495
70 36
71 1
72 0
73 0
74 -10
75 21
76 -9
77 1

List of values

[1, 1, 1, 3, 0, 1, 10, 1, -1, 1, 35, 4, 0, -2, 1, 126, 15, 1, 0, -3, 1, 462, 56, 5, 0, 1, -4, 1, 1716, 210, 21, 1, 0, 3, -5, 1, 6435, 792, 84, 6, 0, 0, 6, -6, 1, 24310, 3003, 330, 28, 1, 0, -1, 10, -7, 1, 92378, 11440, 1287, 120, 7, 0, 0, -4, 15, -8, 1, 352716, 43758, 5005, 495, 36, 1, 0, 0, -10, 21, -9, 1]