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.

A221693 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.

Table of values

n a(n)
1 1
2 3
3 1
4 6
5 21
6 1
7 13
8 152
9 144
10 1
11 28
12 1336
13 3112
14 987
15 1
16 60
17 11036
18 95076
19 63676
20 6765
21 1
22 129
23 92660
24 2627760
25 7033429
26 1302720
27 46368
28 1
29 277
30 774380
31 74531185
32 659020617
33 520770016
34 26650988
35 317811
36 1
37 595
38 6479664
39 2098932856

List of values

[1, 3, 1, 6, 21, 1, 13, 152, 144, 1, 28, 1336, 3112, 987, 1, 60, 11036, 95076, 63676, 6765, 1, 129, 92660, 2627760, 7033429, 1302720, 46368, 1, 277, 774380, 74531185, 659020617, 520770016, 26650988, 317811, 1, 595, 6479664, 2098932856]