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.

A205756 Number of 5X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.

Table of values

n a(n)
1 2268
2 12384
3 63838
4 383290
5 2244622
6 14131118
7 88143754
8 572187838
9 3709029086
10 24613160072
11 163670433374
12 1104155427184
13 7473775678826
14 51060113489722
15 350078262846120
16 2415378206667070
17 16720104940755442
18 116264115349570420

List of values

[2268, 12384, 63838, 383290, 2244622, 14131118, 88143754, 572187838, 3709029086, 24613160072, 163670433374, 1104155427184, 7473775678826, 51060113489722, 350078262846120, 2415378206667070, 16720104940755442, 116264115349570420]