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.

A208430 Number of nX4 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors).

Table of values

n a(n)
1 14
2 216
3 339
4 1292
5 6416
6 32813
7 169899
8 885540
9 4617014
10 24074947
11 125562891
12 654899967
13 3415879346
14 17817085346
15 92933586111
16 484741782266
17 2528419901343
18 13188283797088
19 68790359883448
20 358812044639010
21 1871571851010931

List of values

[14, 216, 339, 1292, 6416, 32813, 169899, 885540, 4617014, 24074947, 125562891, 654899967, 3415879346, 17817085346, 92933586111, 484741782266, 2528419901343, 13188283797088, 68790359883448, 358812044639010, 1871571851010931]

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

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