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.

A208640 Number of 5 X n 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 16
2 89
3 284
4 722
5 1652
6 3577
7 7504
8 15448
9 31440
10 63543
11 127884
12 256718
13 514556
14 1030421
15 2062360
16 4126468
17 8254936
18 16512147
19 33026868
20 66056634
21 132116516
22 264236657
23 528477344
24 1056959152
25 2113923232
26 4227851887
27 8455709724

List of values

[16, 89, 284, 722, 1652, 3577, 7504, 15448, 31440, 63543, 127884, 256718, 514556, 1030421, 2062360, 4126468, 8254936, 16512147, 33026868, 66056634, 132116516, 264236657, 528477344, 1056959152, 2113923232, 4227851887, 8455709724]