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.

A302810 Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 128
3 1010
4 8718
5 74072
6 632004
7 5396562
8 46048956
9 393010948
10 3354229130
11 28626729216
12 244317217799
13 2085144343545
14 17795817110568
15 151879748363323
16 1296229146049548
17 11062765094422311
18 94416001329770771
19 805800467376475810

List of values

[8, 128, 1010, 8718, 74072, 632004, 5396562, 46048956, 393010948, 3354229130, 28626729216, 244317217799, 2085144343545, 17795817110568, 151879748363323, 1296229146049548, 11062765094422311, 94416001329770771, 805800467376475810]

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

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