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.

A219437 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX4 array.

Table of values

n a(n)
1 7
2 39
3 281
4 1750
5 11283
6 72272
7 465400
8 2995163
9 19264275
10 123892153
11 796864416
12 5125652937
13 32969253934
14 212061980660
15 1364004538375
16 8773442559359
17 56431907119815
18 362977142538622
19 2334713999344447
20 15017169783617850

List of values

[7, 39, 281, 1750, 11283, 72272, 465400, 2995163, 19264275, 123892153, 796864416, 5125652937, 32969253934, 212061980660, 1364004538375, 8773442559359, 56431907119815, 362977142538622, 2334713999344447, 15017169783617850]

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

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