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.

A200193 Number of -n..n arrays x(0..3) of 4 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

Table of values

n a(n)
1 2
2 14
3 48
4 120
5 242
6 426
7 688
8 1040
9 1494
10 2066
11 2768
12 3612
13 4614
14 5786
15 7140
16 8692
17 10454
18 12438
19 14660
20 17132
21 19866
22 22878
23 26180
24 29784
25 33706
26 37958
27 42552
28 47504
29 52826
30 58530
31 64632
32 71144
33 78078
34 85450
35 93272
36 101556
37 110318
38 119570
39 129324

List of values

[2, 14, 48, 120, 242, 426, 688, 1040, 1494, 2066, 2768, 3612, 4614, 5786, 7140, 8692, 10454, 12438, 14660, 17132, 19866, 22878, 26180, 29784, 33706, 37958, 42552, 47504, 52826, 58530, 64632, 71144, 78078, 85450, 93272, 101556, 110318, 119570, 129324]