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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.

A280728 Number of even divisors of Lucas(n).

Table of values

n a(n)
0 1
1 0
2 0
3 2
4 0
5 0
6 3
7 0
8 0
9 4
10 0
11 0
12 4
13 0
14 0
15 8
16 0
17 0
18 8
19 0
20 0
21 8
22 0
23 0
24 4
25 0
26 0
27 8
28 0
29 0
30 12
31 0
32 0
33 8
34 0
35 0
36 8
37 0
38 0
39 16
40 0
41 0
42 24
43 0
44 0
45 64
46 0
47 0
48 8
49 0
50 0
51 16
52 0
53 0
54 20
55 0
56 0
57 16
58 0
59 0
60 32
61 0
62 0
63 64
64 0
65 0
66 24
67 0
68 0
69 32
70 0
71 0
72 8
73 0
74 0
75 128
76 0
77 0
78 12
79 0
80 0

List of values

[1, 0, 0, 2, 0, 0, 3, 0, 0, 4, 0, 0, 4, 0, 0, 8, 0, 0, 8, 0, 0, 8, 0, 0, 4, 0, 0, 8, 0, 0, 12, 0, 0, 8, 0, 0, 8, 0, 0, 16, 0, 0, 24, 0, 0, 64, 0, 0, 8, 0, 0, 16, 0, 0, 20, 0, 0, 16, 0, 0, 32, 0, 0, 64, 0, 0, 24, 0, 0, 32, 0, 0, 8, 0, 0, 128, 0, 0, 12, 0, 0]

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