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.

A200457 Number of -n..n arrays x(0..4) of 5 elements with zero sum and nonzero first and second differences.

Table of values

n a(n)
1 6
2 144
3 728
4 2334
5 5720
6 12002
7 22276
8 38174
9 61290
10 93704
11 137374
12 194964
13 268842
14 362092
15 477620
16 618954
17 789324
18 992970
19 1233412
20 1515270
21 1842742
22 2220844
23 2654034
24 3148080
25 3707758
26 4339192
27 5047836
28 5840186
29 6721964
30 7700510
31 8781768

List of values

[6, 144, 728, 2334, 5720, 12002, 22276, 38174, 61290, 93704, 137374, 194964, 268842, 362092, 477620, 618954, 789324, 992970, 1233412, 1515270, 1842742, 2220844, 2654034, 3148080, 3707758, 4339192, 5047836, 5840186, 6721964, 7700510, 8781768]