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.

A201089 Number of -n..n arrays of 4 elements with first and second differences also in -n..n.

Table of values

n a(n)
1 25
2 175
3 651
4 1759
5 3899
6 7581
7 13405
8 22085
9 34421
10 51331
11 73815
12 102995
13 140071
14 186369
15 243289
16 312361
17 395185
18 493495
19 609091
20 743911
21 899955
22 1079365
23 1284341
24 1517229
25 1780429
26 2076491
27 2408015
28 2777755
29 3188511
30 3643241
31 4144945
32 4696785

List of values

[25, 175, 651, 1759, 3899, 7581, 13405, 22085, 34421, 51331, 73815, 102995, 140071, 186369, 243289, 312361, 395185, 493495, 609091, 743911, 899955, 1079365, 1284341, 1517229, 1780429, 2076491, 2408015, 2777755, 3188511, 3643241, 4144945, 4696785]