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.

A266209 Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal, vertical, diagonal or antidiagonal neighbor equal to 4-1.

Table of values

n a(n)
1 8
2 8
3 8
4 16
5 312
6 14936
7 310552
8 8027264
9 153019144
10 3430340488
11 64644807000
12 1348807023952
13 25490020592680
14 512739267856872
15 9742558843713512
16 192399460839867616
17 3675912909241399304
18 71947890449406450248

List of values

[8, 8, 8, 16, 312, 14936, 310552, 8027264, 153019144, 3430340488, 64644807000, 1348807023952, 25490020592680, 512739267856872, 9742558843713512, 192399460839867616, 3675912909241399304, 71947890449406450248]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.