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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.

A220388 Majority value maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 3Xn array.

Table of values

n a(n)
1 1
2 21
3 136
4 757
5 5114
6 33247
7 211944
8 1358599
9 8710809
10 55837516
11 357929465
12 2294335738
13 14706528192
14 94267737477
15 604248583206
16 3873181842138
17 24826757202429
18 159137319721129
19 1020056076249840
20 6538468564699587

List of values

[1, 21, 136, 757, 5114, 33247, 211944, 1358599, 8710809, 55837516, 357929465, 2294335738, 14706528192, 94267737477, 604248583206, 3873181842138, 24826757202429, 159137319721129, 1020056076249840, 6538468564699587]

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

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