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.

A231377 Number of n X 3 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

Table of values

n a(n)
1 4
2 21
3 93
4 378
5 1519
6 6126
7 24747
8 99964
9 403743
10 1630662
11 6586087
12 26600572
13 107437031
14 433927396
15 1752589551
16 7078534592
17 28589495207
18 115470119764
19 466372299261
20 1883631211124
21 7607798625811
22 30727139997676
23 124103854340837

List of values

[4, 21, 93, 378, 1519, 6126, 24747, 99964, 403743, 1630662, 6586087, 26600572, 107437031, 433927396, 1752589551, 7078534592, 28589495207, 115470119764, 466372299261, 1883631211124, 7607798625811, 30727139997676, 124103854340837]

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

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