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.

A221331 Number of 4 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 1
2 577
3 33873
4 2460824
5 162430981
6 10794156688
7 711858713069
8 46910596287335
9 3089778765626866
10 203426990390736036
11 13389504827335440162
12 881130781309712234876
13 57978558022828544235124
14 3814742757245230038689495

List of values

[1, 577, 33873, 2460824, 162430981, 10794156688, 711858713069, 46910596287335, 3089778765626866, 203426990390736036, 13389504827335440162, 881130781309712234876, 57978558022828544235124, 3814742757245230038689495]

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

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