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.

A303098 Number of n X 4 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 2
2 46
3 431
4 4667
5 49534
6 523578
7 5550469
8 58797885
9 622939052
10 6599795867
11 69921718286
12 740789814624
13 7848336732510
14 83149623160674
15 880933142617394
16 9333093335046307
17 98879957242770978
18 1047589002709557389

List of values

[2, 46, 431, 4667, 49534, 523578, 5550469, 58797885, 622939052, 6599795867, 69921718286, 740789814624, 7848336732510, 83149623160674, 880933142617394, 9333093335046307, 98879957242770978, 1047589002709557389]

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

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