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.

A281718 Number of 4Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 8
2 6
3 14
4 97
5 294
6 1410
7 5781
8 23798
9 103034
10 429701
11 1822286
12 7734672
13 32650303
14 138610834
15 587182558
16 2488856940
17 10558553240
18 44771374413
19 189944049261
20 805892553288
21 3419413103710
22 14511303192013
23 61585052285760

List of values

[8, 6, 14, 97, 294, 1410, 5781, 23798, 103034, 429701, 1822286, 7734672, 32650303, 138610834, 587182558, 2488856940, 10558553240, 44771374413, 189944049261, 805892553288, 3419413103710, 14511303192013, 61585052285760]

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

Content is available under The OEIS End-User License Agreement.