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.

A275562 Number of nX5 0..2 arrays with no element equal to any value at offset (-2,0) (-1,2) or (0,-2) and new values introduced in order 0..2.

Table of values

n a(n)
1 12
2 288
3 672
4 3192
5 13104
6 57600
7 248520
8 1075140
9 4663710
10 20186982
11 87477240
12 378971730
13 1641701760
14 7112729712
15 30813640998
16 133494984432
17 578341554336
18 2505543992028
19 10854800690652
20 47026263554508
21 203732097403680

List of values

[12, 288, 672, 3192, 13104, 57600, 248520, 1075140, 4663710, 20186982, 87477240, 378971730, 1641701760, 7112729712, 30813640998, 133494984432, 578341554336, 2505543992028, 10854800690652, 47026263554508, 203732097403680]

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

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