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.

A208636 Number of n X 7 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 64
2 191
3 628
4 2149
5 7504
6 26508
7 94320
8 337227
9 1209736
10 4349981
11 15668332
12 56505640
13 203961088
14 736686999
15 2662084284
16 9622940853
17 34793691400
18 125826023972
19 455089068016
20 1646125164451
21 5954682909712
22 21541486064685

List of values

[64, 191, 628, 2149, 7504, 26508, 94320, 337227, 1209736, 4349981, 15668332, 56505640, 203961088, 736686999, 2662084284, 9622940853, 34793691400, 125826023972, 455089068016, 1646125164451, 5954682909712, 21541486064685]