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.

A208403 Number of n X 3 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 5
2 182
3 10682
4 667478
5 42012698
6 2646531062
7 166729574522
8 10503950018198
9 661748758909658
10 41690171165650742
11 2626480778916392762
12 165468289040095516118
13 10424502209304556920218
14 656743639184636861807222

List of values

[5, 182, 10682, 667478, 42012698, 2646531062, 166729574522, 10503950018198, 661748758909658, 41690171165650742, 2626480778916392762, 165468289040095516118, 10424502209304556920218, 656743639184636861807222]

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

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