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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.

A109447 Binomial coefficients C(n,k) with n-k odd, read by rows.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 4
6 4
7 1
8 10
9 5
10 6
11 20
12 6
13 1
14 21
15 35
16 7
17 8
18 56
19 56
20 8
21 1
22 36
23 126
24 84
25 9
26 10
27 120
28 252
29 120
30 10
31 1
32 55
33 330
34 462
35 165
36 11
37 12
38 220
39 792
40 792
41 220
42 12
43 1
44 78
45 715
46 1716
47 1287
48 286
49 13
50 14
51 364
52 2002
53 3432
54 2002
55 364
56 14
57 1
58 105
59 1365
60 5005
61 6435
62 3003
63 455
64 15

List of values

[1, 2, 1, 3, 4, 4, 1, 10, 5, 6, 20, 6, 1, 21, 35, 7, 8, 56, 56, 8, 1, 36, 126, 84, 9, 10, 120, 252, 120, 10, 1, 55, 330, 462, 165, 11, 12, 220, 792, 792, 220, 12, 1, 78, 715, 1716, 1287, 286, 13, 14, 364, 2002, 3432, 2002, 364, 14, 1, 105, 1365, 5005, 6435, 3003, 455, 15]