A221828 - cp's OEIS frontend

A221828 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	0
8	16
9	14
10	0
11	0
12	73
13	202
14	64
15	0
16	0
17	333
18	2879
19	2930
20	292
21	0
22	0
23	1519
24	40983
25	115417
26	41618
27	1332
28	0
29	0
30	6929
31	583419
32	4715043
33	4755445
34	592601
35	6076
36	0
37	0
38	31607
39	8304016
40	192788993
41	570066685
42	194407111
43	8434490
44	27716
45	0
46	0
47	144177

[0, 0, 0, 0, 3, 0, 0, 16, 14, 0, 0, 73, 202, 64, 0, 0, 333, 2879, 2930, 292, 0, 0, 1519, 40983, 115417, 41618, 1332, 0, 0, 6929, 583419, 4715043, 4755445, 592601, 6076, 0, 0, 31607, 8304016, 192788993, 570066685, 194407111, 8434490, 27716, 0, 0, 144177]

cp's OEIS Frontend

A221828 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.

Table of values

List of values