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.

A146161 a(n) is the number of n X n matrices with entries in {1,2,3} such that all adjacent entries (in the same row or column) differ by 1 or -1.

Table of values

n a(n)
1 3
2 8
3 48
4 512
5 12288
6 524288
7 50331648
8 8589934592
9 3298534883328
10 2251799813685248
11 3458764513820540928
12 9444732965739290427392
13 58028439341502200385896448
14 633825300114114700748351602688

List of values

[3, 8, 48, 512, 12288, 524288, 50331648, 8589934592, 3298534883328, 2251799813685248, 3458764513820540928, 9444732965739290427392, 58028439341502200385896448, 633825300114114700748351602688]