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.

A250168 Number of length 3+1 0..n arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.

Table of values

n a(n)
1 8
2 37
3 96
4 211
5 380
6 639
7 976
8 1437
9 2000
10 2721
11 3568
12 4607
13 5796
14 7211
15 8800
16 10649
17 12696
18 15037
19 17600
20 20491
21 23628
22 27127
23 30896
24 35061
25 39520
26 44409
27 49616
28 55287
29 61300
30 67811
31 74688
32 82097
33 89896
34 98261
35 107040
36 116419
37 126236
38 136687
39 147600

List of values

[8, 37, 96, 211, 380, 639, 976, 1437, 2000, 2721, 3568, 4607, 5796, 7211, 8800, 10649, 12696, 15037, 17600, 20491, 23628, 27127, 30896, 35061, 39520, 44409, 49616, 55287, 61300, 67811, 74688, 82097, 89896, 98261, 107040, 116419, 126236, 136687, 147600]