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.

A208411 Number of 4 X n 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 15
2 2795
3 667478
4 163422914
5 40039156736
6 9810325806914
7 2403711876698218
8 588954110860577394
9 144304709913279198696
10 35357337571782719886214
11 8663205247528271356492160
12 2122646395773319892200238358

List of values

[15, 2795, 667478, 163422914, 40039156736, 9810325806914, 2403711876698218, 588954110860577394, 144304709913279198696, 35357337571782719886214, 8663205247528271356492160, 2122646395773319892200238358]

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

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