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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.

A284724 a(n) = (1/2) * smallest even number missing from [A280864(1), ..., A280864(n-1)].

Table of values

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

List of values

[1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 7, 8, 9, 9, 9, 10, 10, 12, 13, 13, 13, 15, 15, 15, 15, 16, 16, 16, 16, 18, 18, 18, 20, 20, 20, 20, 20, 20, 20, 20, 22, 22, 22, 22, 22, 25, 25, 25, 25, 25, 27, 27, 27, 28, 28, 28, 30, 30, 30, 30, 32, 32, 32, 32, 33, 33, 33, 35, 35, 35, 35, 36, 36, 36, 36, 40, 40, 40, 42]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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