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.

A268027 Number of 3Xn 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

Table of values

n a(n)
1 24
2 576
3 13824
4 295962
5 6042732
6 117582228
7 2205234900
8 40088968398
9 709841497188
10 12287419441812
11 208546228493724
12 3478737714576768
13 57143989099923852
14 925889151644801202
15 14817867358400405148

List of values

[24, 576, 13824, 295962, 6042732, 117582228, 2205234900, 40088968398, 709841497188, 12287419441812, 208546228493724, 3478737714576768, 57143989099923852, 925889151644801202, 14817867358400405148]