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.

A364580 Number of n-step self-avoiding walks on the square Manhattan lattice that do not take two consecutive turns.

Table of values

n a(n)
0 1
1 2
2 4
3 6
4 10
5 16
6 26
7 42
8 68
9 110
10 178
11 288
12 460
13 740
14 1192
15 1918
16 3064
17 4910
18 7872
19 12620
20 20114
21 32150
22 51396
23 82160
24 130730
25 208506
26 332616
27 530588
28 843222
29 1342662
30 2138280
31 3405346
32 5406522
33 8597632
34 13674278
35 21748530
36 34501460
37 54807754
38 87077354

List of values

[1, 2, 4, 6, 10, 16, 26, 42, 68, 110, 178, 288, 460, 740, 1192, 1918, 3064, 4910, 7872, 12620, 20114, 32150, 51396, 82160, 130730, 208506, 332616, 530588, 843222, 1342662, 2138280, 3405346, 5406522, 8597632, 13674278, 21748530, 34501460, 54807754, 87077354]