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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.

A373744 Triangle read by rows: the almost-Riordan array ( 1/(1-x) | 2/((1-x)*(1+sqrt(1-4*x))), (1-2*x-sqrt(1-4*x))/(2*x) ).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 4
8 4
9 1
10 1
11 9
12 13
13 6
14 1
15 1
16 23
17 41
18 26
19 8
20 1
21 1
22 65
23 131
24 101
25 43
26 10
27 1
28 1
29 197
30 428
31 376
32 197
33 64
34 12
35 1
36 1
37 626
38 1429
39 1377
40 834
41 337
42 89
43 14
44 1
45 1
46 2056
47 4861
48 5017
49 3382
50 1597
51 529
52 118
53 16
54 1
55 1
56 6918
57 16795
58 18277
59 13378
60 7105
61 2773
62 781
63 151
64 18
65 1

List of values

[1, 1, 1, 1, 2, 1, 1, 4, 4, 1, 1, 9, 13, 6, 1, 1, 23, 41, 26, 8, 1, 1, 65, 131, 101, 43, 10, 1, 1, 197, 428, 376, 197, 64, 12, 1, 1, 626, 1429, 1377, 834, 337, 89, 14, 1, 1, 2056, 4861, 5017, 3382, 1597, 529, 118, 16, 1, 1, 6918, 16795, 18277, 13378, 7105, 2773, 781, 151, 18, 1]

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