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.

A221241 Number of n X 3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor.

Table of values

n a(n)
1 2
2 50
3 1056
4 21660
5 441720
6 8997120
7 183206016
8 3730330800
9 75953515968
10 1546488223200
11 31487986033920
12 641125466910720
13 13053925809145728
14 265790370894192000
15 5411745241852207104
16 110188290202715208960

List of values

[2, 50, 1056, 21660, 441720, 8997120, 183206016, 3730330800, 75953515968, 1546488223200, 31487986033920, 641125466910720, 13053925809145728, 265790370894192000, 5411745241852207104, 110188290202715208960]

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

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