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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.

A202710 Triangle read by rows. T(n, k) = coefficient of x^n in the Taylor expansion of [((1 - x - 2*x^2 - sqrt(1 - 2*x - 3*x^2))/(2*x^2))]^k.

Table of values

n a(n)
1 1
2 2
3 1
4 4
5 4
6 1
7 9
8 12
9 6
10 1
11 21
12 34
13 24
14 8
15 1
16 51
17 94
18 83
19 40
20 10
21 1
22 127
23 258
24 267
25 164
26 60
27 12
28 1
29 323
30 707
31 825
32 604
33 285
34 84
35 14
36 1
37 835
38 1940
39 2488
40 2084
41 1185
42 454
43 112
44 16
45 1
46 2188
47 5337
48 7389
49 6890
50 4527
51 2106
52 679
53 144
54 18
55 1
56 5798
57 14728
58 21726
59 22120
60 16325
61 8838
62 3479
63 968
64 180
65 20
66 1

List of values

[1, 2, 1, 4, 4, 1, 9, 12, 6, 1, 21, 34, 24, 8, 1, 51, 94, 83, 40, 10, 1, 127, 258, 267, 164, 60, 12, 1, 323, 707, 825, 604, 285, 84, 14, 1, 835, 1940, 2488, 2084, 1185, 454, 112, 16, 1, 2188, 5337, 7389, 6890, 4527, 2106, 679, 144, 18, 1, 5798, 14728, 21726, 22120, 16325, 8838, 3479, 968, 180, 20, 1]