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.

A011850 a(n) = floor(binomial(n,4)/4).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 1
6 3
7 8
8 17
9 31
10 52
11 82
12 123
13 178
14 250
15 341
16 455
17 595
18 765
19 969
20 1211
21 1496
22 1828
23 2213
24 2656
25 3162
26 3737
27 4387
28 5118
29 5937
30 6851
31 7866
32 8990
33 10230
34 11594
35 13090
36 14726
37 16511
38 18453
39 20562

List of values

[0, 0, 0, 0, 0, 1, 3, 8, 17, 31, 52, 82, 123, 178, 250, 341, 455, 595, 765, 969, 1211, 1496, 1828, 2213, 2656, 3162, 3737, 4387, 5118, 5937, 6851, 7866, 8990, 10230, 11594, 13090, 14726, 16511, 18453, 20562]