cp's OEIS Frontend

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.

A093393 [n/9] + [n/4] + [(n+1)/9] + [(n+1)/4] + [(n+2)/9].

Table of values

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

List of values

[0, 0, 0, 1, 2, 2, 2, 4, 6, 7, 7, 8, 9, 9, 9, 10, 12, 13, 14, 15, 16, 16, 16, 17, 18, 19, 20, 22, 23, 23, 23, 24, 25, 25, 26, 28, 30, 30, 30, 31, 32, 32, 32, 34, 36, 37, 37, 38, 39, 39, 39, 40, 42, 43, 44, 45, 46, 46, 46, 47, 48, 49, 50, 52, 53, 53, 53, 54, 55, 55, 56, 58, 60, 60]

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

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