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.

A303458 Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 128
3 1696
4 22756
5 306448
6 4129588
7 55681352
8 750838628
9 10125474040
10 136549176292
11 1841478572144
12 24833903347572
13 334906650542448
14 4516506726074020
15 60909019475694136
16 821411104147953668

List of values

[8, 128, 1696, 22756, 306448, 4129588, 55681352, 750838628, 10125474040, 136549176292, 1841478572144, 24833903347572, 334906650542448, 4516506726074020, 60909019475694136, 821411104147953668]

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

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