A329707 - cp's OEIS frontend

A329707 Number of placements of zero or more dominoes on a 2 X n grid where no two empty squares are horizontally adjacent.

n	a(n)
0	1
1	2
2	4
3	11
4	25
5	61
6	146
7	351
8	844
9	2028
10	4875
11	11717
12	28163
13	67692
14	162703
15	391070
16	939968
17	2259289
18	5430383
19	13052363
20	31372406
21	75406105
22	181244648
23	435636112
24	1047086489
25	2516756727
26	6049227537
27	14539805696
28	34947594281
29	83999358146
30	201899224084
31	485281049587
32	1166412095721

[1, 2, 4, 11, 25, 61, 146, 351, 844, 2028, 4875, 11717, 28163, 67692, 162703, 391070, 939968, 2259289, 5430383, 13052363, 31372406, 75406105, 181244648, 435636112, 1047086489, 2516756727, 6049227537, 14539805696, 34947594281, 83999358146, 201899224084, 485281049587, 1166412095721]

cp's OEIS Frontend

A329707 Number of placements of zero or more dominoes on a 2 X n grid where no two empty squares are horizontally adjacent.

Table of values

List of values