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.

A283037 Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element.

Table of values

n a(n)
1 1
2 16
3 119
4 818
5 5065
6 30378
7 175963
8 997302
9 5559013
10 30578068
11 166427637
12 897975464
13 4809947903
14 25605505484
15 135587794041
16 714668815274
17 3751742509465
18 19624971865578
19 102330051488077
20 532058283113570

List of values

[1, 16, 119, 818, 5065, 30378, 175963, 997302, 5559013, 30578068, 166427637, 897975464, 4809947903, 25605505484, 135587794041, 714668815274, 3751742509465, 19624971865578, 102330051488077, 532058283113570]

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

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