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.

A207117 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 102
4 1024
5 12288
6 175561
7 2330037
8 40119556
9 667127008
10 12622297801
11 236060280854
12 5051251755001
13 104507364758952
14 2416776784204176
15 54925343492859621
16 1369884877162739344
17 33478733130375924736

List of values

[2, 16, 102, 1024, 12288, 175561, 2330037, 40119556, 667127008, 12622297801, 236060280854, 5051251755001, 104507364758952, 2416776784204176, 54925343492859621, 1369884877162739344, 33478733130375924736]