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.

A267670 Number of 5Xn 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

Table of values

n a(n)
1 12
2 288
3 1800
4 18432
5 80404
6 624476
7 2369260
8 16599404
9 58673768
10 396192232
11 1341344220
12 8997486724
13 29537306724
14 199856740924
15 639725846056
16 4402373616416
17 13773133899732
18 96844636475844
19 296410370293060

List of values

[12, 288, 1800, 18432, 80404, 624476, 2369260, 16599404, 58673768, 396192232, 1341344220, 8997486724, 29537306724, 199856740924, 639725846056, 4402373616416, 13773133899732, 96844636475844, 296410370293060]