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.

A303316 Number of 4Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 6
3 11
4 36
5 50
6 128
7 439
8 1085
9 2431
10 6452
11 17455
12 43514
13 108524
14 281615
15 726261
16 1839731
17 4685152
18 12025643
19 30754258
20 78396104
21 200278695
22 512290781
23 1308785863
24 3342222476
25 8540451095
26 21826102586
27 55761123412
28 142456533311

List of values

[8, 6, 11, 36, 50, 128, 439, 1085, 2431, 6452, 17455, 43514, 108524, 281615, 726261, 1839731, 4685152, 12025643, 30754258, 78396104, 200278695, 512290781, 1308785863, 3342222476, 8540451095, 21826102586, 55761123412, 142456533311]