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.

A219436 Unmatched value maps: number of nX3 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX3 array.

Table of values

n a(n)
1 4
2 18
3 78
4 329
5 1396
6 5925
7 25147
8 106731
9 452984
10 1922547
11 8159665
12 34631193
13 146981443
14 623817540
15 2647601755
16 11236931619
17 47691701338
18 202412762994
19 859078738551
20 3646095572825
21 15474731627673
22 65677740521441

List of values

[4, 18, 78, 329, 1396, 5925, 25147, 106731, 452984, 1922547, 8159665, 34631193, 146981443, 623817540, 2647601755, 11236931619, 47691701338, 202412762994, 859078738551, 3646095572825, 15474731627673, 65677740521441]

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

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