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.

A218760 Unmatched value maps: number of nX3 binary arrays indicating the locations of corresponding elements not equal to any horizontal or vertical neighbor in a random 0..1 nX3 array.

Table of values

n a(n)
1 4
2 18
3 90
4 403
5 1876
6 8697
7 40383
8 187413
9 869598
10 4035492
11 18727387
12 86907272
13 403304737
14 1871588753
15 8685363409
16 40305616278
17 187043701224
18 868001747571
19 4028080274884
20 18692855005565
21 86746738864403
22 402560052640421

List of values

[4, 18, 90, 403, 1876, 8697, 40383, 187413, 869598, 4035492, 18727387, 86907272, 403304737, 1871588753, 8685363409, 40305616278, 187043701224, 868001747571, 4028080274884, 18692855005565, 86746738864403, 402560052640421]

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

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