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.

A275354 Number of 4Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.

Table of values

n a(n)
1 14
2 216
3 1024
4 6156
5 38256
6 239112
7 1530060
8 9861340
9 63978000
10 416816872
11 2721060036
12 17793765428
13 116463216432
14 762750251516
15 4997375137216
16 32749260871852
17 214647538572140
18 1406987385055340
19 9223158260357292

List of values

[14, 216, 1024, 6156, 38256, 239112, 1530060, 9861340, 63978000, 416816872, 2721060036, 17793765428, 116463216432, 762750251516, 4997375137216, 32749260871852, 214647538572140, 1406987385055340, 9223158260357292]

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

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