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.

A011930 a(n) = floor(n(n-1)(n-2)(n-3)/20).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 1
5 6
6 18
7 42
8 84
9 151
10 252
11 396
12 594
13 858
14 1201
15 1638
16 2184
17 2856
18 3672
19 4651
20 5814
21 7182
22 8778
23 10626
24 12751
25 15180
26 17940
27 21060
28 24570
29 28501
30 32886
31 37758
32 43152
33 49104
34 55651
35 62832
36 70686
37 79254
38 88578
39 98701

List of values

[0, 0, 0, 0, 1, 6, 18, 42, 84, 151, 252, 396, 594, 858, 1201, 1638, 2184, 2856, 3672, 4651, 5814, 7182, 8778, 10626, 12751, 15180, 17940, 21060, 24570, 28501, 32886, 37758, 43152, 49104, 55651, 62832, 70686, 79254, 88578, 98701]

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

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