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.

A231694 Number of nX2 0..3 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.

Table of values

n a(n)
1 4
2 28
3 272
4 1998
5 13260
6 94996
7 691229
8 4926082
9 35082734
10 251198534
11 1797886622
12 12852933731
13 91912956748
14 657463618650
15 4702487810918
16 33632995941197
17 240557644773042
18 1720590474243847
19 12306454228470804
20 88021459865552231

List of values

[4, 28, 272, 1998, 13260, 94996, 691229, 4926082, 35082734, 251198534, 1797886622, 12852933731, 91912956748, 657463618650, 4702487810918, 33632995941197, 240557644773042, 1720590474243847, 12306454228470804, 88021459865552231]

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

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