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.

A011913 a(n) = floor(n*(n - 1)*(n - 2)/31).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 1
6 3
7 6
8 10
9 16
10 23
11 31
12 42
13 55
14 70
15 88
16 108
17 131
18 157
19 187
20 220
21 257
22 298
23 342
24 391
25 445
26 503
27 566
28 634
29 707
30 785
31 870
32 960
33 1056
34 1158
35 1266
36 1381
37 1503
38 1632
39 1768
40 1912
41 2063
42 2221
43 2388
44 2563
45 2746
46 2938
47 3138
48 3347
49 3565
50 3793
51 4030
52 4277
53 4534
54 4800
55 5077
56 5365
57 5663
58 5972
59 6292
60 6623
61 6965
62 7320
63 7686
64 8064
65 8454
66 8856
67 9271
68 9699
69 10140
70 10594

List of values

[0, 0, 0, 0, 0, 1, 3, 6, 10, 16, 23, 31, 42, 55, 70, 88, 108, 131, 157, 187, 220, 257, 298, 342, 391, 445, 503, 566, 634, 707, 785, 870, 960, 1056, 1158, 1266, 1381, 1503, 1632, 1768, 1912, 2063, 2221, 2388, 2563, 2746, 2938, 3138, 3347, 3565, 3793, 4030, 4277, 4534, 4800, 5077, 5365, 5663, 5972, 6292, 6623, 6965, 7320, 7686, 8064, 8454, 8856, 9271, 9699, 10140, 10594]