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.

A221505 Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction.

Table of values

n a(n)
1 0
2 44
3 664
4 12495
5 221614
6 4010052
7 72195950
8 1301644004
9 23457033692
10 422775316892
11 7619575554956
12 137327198061432
13 2475032964645724
14 44607285582888084
15 803952693936738644
16 14489560929396894421

List of values

[0, 44, 664, 12495, 221614, 4010052, 72195950, 1301644004, 23457033692, 422775316892, 7619575554956, 137327198061432, 2475032964645724, 44607285582888084, 803952693936738644, 14489560929396894421]

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

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