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.

A217269 Number of n X 4 arrays of occupancy after each element moves to some horizontal or vertical neighbor.

Table of values

n a(n)
1 4
2 441
3 33856
4 2572816
5 194881600
6 14755689729
7 1117092569476
8 84567501131481
9 6401965110822961
10 484642857129680209
11 36688499987102073289
12 2777397165745966328049
13 210254833741528740686404

List of values

[4, 441, 33856, 2572816, 194881600, 14755689729, 1117092569476, 84567501131481, 6401965110822961, 484642857129680209, 36688499987102073289, 2777397165745966328049, 210254833741528740686404]

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

Content is available under The OEIS End-User License Agreement.