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.

A303416 Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 4
2 32
3 252
4 1988
5 15684
6 123732
7 976132
8 7700788
9 60752164
10 479278932
11 3781071812
12 29829193588
13 235325017444
14 1856498858132
15 14646075660292
16 115544122910388
17 911537305199524
18 7191194479141332
19 56731938168469572
20 447563032495731188

List of values

[4, 32, 252, 1988, 15684, 123732, 976132, 7700788, 60752164, 479278932, 3781071812, 29829193588, 235325017444, 1856498858132, 14646075660292, 115544122910388, 911537305199524, 7191194479141332, 56731938168469572, 447563032495731188]

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

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