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.

A208634 Number of n X 5 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 47
3 150
4 494
5 1652
6 5572
7 18888
8 64216
9 218704
10 745616
11 2543520
12 8679776
13 29625920
14 101131840
15 345250944
16 1178690944
17 4024163584
18 13739075840
19 46907582976
20 160151393792
21 546788836352
22 1866849412096
23 6373813684224

List of values

[16, 47, 150, 494, 1652, 5572, 18888, 64216, 218704, 745616, 2543520, 8679776, 29625920, 101131840, 345250944, 1178690944, 4024163584, 13739075840, 46907582976, 160151393792, 546788836352, 1866849412096, 6373813684224]