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.

A302071 Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 128
3 884
4 7070
5 54177
6 420121
7 3247765
8 25151723
9 194858064
10 1509933667
11 11700696791
12 90670424899
13 702618377845
14 5444692727615
15 42191725016453
16 326949892917866
17 2533582903716510
18 19633107331640883
19 152139842374919901

List of values

[8, 128, 884, 7070, 54177, 420121, 3247765, 25151723, 194858064, 1509933667, 11700696791, 90670424899, 702618377845, 5444692727615, 42191725016453, 326949892917866, 2533582903716510, 19633107331640883, 152139842374919901]

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

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