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.

A267914 Number of 3Xn 0..2 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 5
2 122
3 2304
4 47916
5 878004
6 16435188
7 292341636
8 5209312500
9 90756319716
10 1576811812500
11 27101734404228
12 464405881704372
13 7914055449851172
14 134550496512585684
15 2280733479912724164
16 38598223339253538036

List of values

[5, 122, 2304, 47916, 878004, 16435188, 292341636, 5209312500, 90756319716, 1576811812500, 27101734404228, 464405881704372, 7914055449851172, 134550496512585684, 2280733479912724164, 38598223339253538036]