A221939 - cp's OEIS frontend

A221939 Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns.

n	a(n)
1	1
2	91
3	1599
4	36467
5	799632
6	17595404
7	387146025
8	8517616158
9	187399250327
10	4123030670649
11	90712135220235
12	1995786856338823
13	43909951229853113
14	966076992787974879
15	21254971544597958477
16	467637484141672483673

[1, 91, 1599, 36467, 799632, 17595404, 387146025, 8517616158, 187399250327, 4123030670649, 90712135220235, 1995786856338823, 43909951229853113, 966076992787974879, 21254971544597958477, 467637484141672483673]

cp's OEIS Frontend

A221939 Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns.

Table of values

List of values