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.

A212870 Number of nondecreasing sequences of 3 1..n integers with no element dividing the sequence sum.

Table of values

n a(n)
1 0
2 0
3 1
4 3
5 9
6 16
7 29
8 43
9 64
10 92
11 127
12 168
13 219
14 281
15 355
16 435
17 531
18 638
19 762
20 901
21 1057
22 1230
23 1420
24 1628
25 1858
26 2107
27 2380
28 2674
29 2992
30 3338
31 3707
32 4099
33 4524
34 4976
35 5465
36 5975
37 6516
38 7092
39 7704
40 8348
41 9025
42 9744
43 10495
44 11289
45 12125
46 12994
47 13907
48 14859

List of values

[0, 0, 1, 3, 9, 16, 29, 43, 64, 92, 127, 168, 219, 281, 355, 435, 531, 638, 762, 901, 1057, 1230, 1420, 1628, 1858, 2107, 2380, 2674, 2992, 3338, 3707, 4099, 4524, 4976, 5465, 5975, 6516, 7092, 7704, 8348, 9025, 9744, 10495, 11289, 12125, 12994, 13907, 14859]

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

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