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.

A049995 Number of arithmetic progressions of 4 or more positive integers, nondecreasing with sum <= n.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 2
6 3
7 4
8 6
9 7
10 10
11 11
12 14
13 15
14 18
15 21
16 25
17 26
18 30
19 31
20 37
21 40
22 44
23 45
24 51
25 55
26 59
27 62
28 69
29 70
30 79
31 80
32 86
33 89
34 94
35 101
36 111
37 112
38 117
39 120
40 132
41 133
42 143
43 144
44 152
45 162
46 168
47 169
48 180
49 184
50 196
51 200
52 209
53 210
54 221
55 230
56 242
57 246
58 253
59 254
60 274
61 275
62 282
63 291
64 302
65 312
66 325
67 326
68 336

List of values

[0, 0, 0, 1, 2, 3, 4, 6, 7, 10, 11, 14, 15, 18, 21, 25, 26, 30, 31, 37, 40, 44, 45, 51, 55, 59, 62, 69, 70, 79, 80, 86, 89, 94, 101, 111, 112, 117, 120, 132, 133, 143, 144, 152, 162, 168, 169, 180, 184, 196, 200, 209, 210, 221, 230, 242, 246, 253, 254, 274, 275, 282, 291, 302, 312, 325, 326, 336]

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

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