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.

A337906 The number of walks of n steps on the hexagonal lattice that start at the origin and end at the non-adjacent vertex (2,0).

Table of values

n a(n)
2 1
3 6
4 34
5 200
6 1095
7 6230
8 34636
9 195552
10 1099140
11 6218520
12 35210736
13 200099328
14 1139401263
15 6504768270
16 37211008120
17 213311576192
18 1225053737622
19 7047867363108
20 40612374024300
21 234376628718960
22 1354498970905080
23 7838134441085520
24 45412879702456800
25 263417461793120000

List of values

[1, 6, 34, 200, 1095, 6230, 34636, 195552, 1099140, 6218520, 35210736, 200099328, 1139401263, 6504768270, 37211008120, 213311576192, 1225053737622, 7047867363108, 40612374024300, 234376628718960, 1354498970905080, 7838134441085520, 45412879702456800, 263417461793120000]