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.

A370831 Alternating sum of composites.

Table of values

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

List of values

[4, 2, 6, 3, 7, 5, 9, 6, 10, 8, 12, 9, 13, 11, 14, 12, 15, 13, 17, 15, 18, 16, 19, 17, 21, 18, 22, 20, 24, 21, 25, 23, 26, 24, 27, 25, 29, 26, 30, 27, 31, 29, 33, 30, 34, 31, 35, 33, 36, 34, 38, 36, 39, 37, 40, 38, 42, 39, 43, 41, 44, 42, 45, 43, 47, 44, 48, 45, 49, 46]

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

Content is available under The OEIS End-User License Agreement.