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.

A269209 Number of n X 3 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 24
2 768
3 18048
4 361728
5 6712704
6 118872576
7 2039727744
8 34214296320
9 564168820608
10 9179147971584
11 147751571802240
12 2357407757843712
13 37337046775523712
14 587670598254177792
15 9200252201653201536

List of values

[24, 768, 18048, 361728, 6712704, 118872576, 2039727744, 34214296320, 564168820608, 9179147971584, 147751571802240, 2357407757843712, 37337046775523712, 587670598254177792, 9200252201653201536]