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.

A302432 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 64
2 86
3 207
4 879
5 2503
6 12527
7 48037
8 204549
9 775916
10 3358602
11 13687791
12 56973192
13 229275449
14 958442181
15 3959517524
16 16388638144
17 67033864950
18 277552341954
19 1148287668884
20 4747634176800
21 19530191061230
22 80658890197236

List of values

[64, 86, 207, 879, 2503, 12527, 48037, 204549, 775916, 3358602, 13687791, 56973192, 229275449, 958442181, 3959517524, 16388638144, 67033864950, 277552341954, 1148287668884, 4747634176800, 19530191061230, 80658890197236]

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

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