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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.

A281261 Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.

Table of values

n a(n)
1 1
2 2
3 2
4 1
5 5
6 2
7 5
8 9
9 2
10 1
11 15
12 14
13 2
14 7
15 35
16 20
17 2
18 1
19 28
20 70
21 27
22 2
23 9
24 84
25 126
26 35
27 2
28 1
29 45
30 210
31 210
32 44
33 2
34 11
35 165
36 462
37 330
38 54
39 2
40 1
41 66
42 495
43 924
44 495
45 65
46 2
47 13
48 286
49 1287
50 1716
51 715
52 77
53 2
54 1
55 91
56 1001
57 3003
58 3003
59 1001
60 90
61 2
62 15
63 455
64 3003
65 6435
66 5005
67 1365
68 104
69 2
70 1
71 120
72 1820
73 8008
74 12870
75 8008
76 1820
77 119
78 2

List of values

[1, 2, 2, 1, 5, 2, 5, 9, 2, 1, 15, 14, 2, 7, 35, 20, 2, 1, 28, 70, 27, 2, 9, 84, 126, 35, 2, 1, 45, 210, 210, 44, 2, 11, 165, 462, 330, 54, 2, 1, 66, 495, 924, 495, 65, 2, 13, 286, 1287, 1716, 715, 77, 2, 1, 91, 1001, 3003, 3003, 1001, 90, 2, 15, 455, 3003, 6435, 5005, 1365, 104, 2, 1, 120, 1820, 8008, 12870, 8008, 1820, 119, 2]