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.

A250169 Number of length 4+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 16
2 119
3 436
4 1269
5 2860
6 5831
7 10460
8 17765
9 27984
10 42611
11 61752
12 87477
13 119672
14 161051
15 211212
16 273601
17 347428
18 436963
19 540948
20 664553
21 805976
22 971367
23 1158288
24 1373969
25 1615248
26 1890503
27 2195780
28 2540693
29 2920396
30 3345831
31 3811180
32 4328789

List of values

[16, 119, 436, 1269, 2860, 5831, 10460, 17765, 27984, 42611, 61752, 87477, 119672, 161051, 211212, 273601, 347428, 436963, 540948, 664553, 805976, 971367, 1158288, 1373969, 1615248, 1890503, 2195780, 2540693, 2920396, 3345831, 3811180, 4328789]