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.

A276245 Number of nX5 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.

Table of values

n a(n)
1 12
2 216
3 900
4 6372
5 43662
6 291113
7 2003694
8 13727745
9 93489265
10 640009243
11 4379295051
12 29922848497
13 204644541144
14 1399625354348
15 9569139510819
16 65434111682248
17 447456959717215
18 3059585696910093
19 20921152908833326

List of values

[12, 216, 900, 6372, 43662, 291113, 2003694, 13727745, 93489265, 640009243, 4379295051, 29922848497, 204644541144, 1399625354348, 9569139510819, 65434111682248, 447456959717215, 3059585696910093, 20921152908833326]

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

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