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.

A221127 Number of 3 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.

Table of values

n a(n)
1 1
2 144
3 4872
4 179300
5 6405243
6 229006550
7 8187649472
8 292733110656
9 10466092166432
10 374194374753326
11 13378578012147801
12 478324533007616827
13 17101545371715018992
14 611431849960750401963
15 21860533596256955469254
16 781580038958752812299025
17 27943844765222490485325201

List of values

[1, 144, 4872, 179300, 6405243, 229006550, 8187649472, 292733110656, 10466092166432, 374194374753326, 13378578012147801, 478324533007616827, 17101545371715018992, 611431849960750401963, 21860533596256955469254, 781580038958752812299025, 27943844765222490485325201]

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

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