A355327 - cp's OEIS frontend

A355327 Number of ways to tile a 2 X n board with squares and dominoes where vertical dominoes are only allowed in even-numbered locations.

n	a(n)
0	1
1	1
2	5
3	10
4	39
5	83
6	317
7	678
8	2585
9	5531
10	21085
11	45116
12	171987
13	368005
14	1402873
15	3001764
16	11443033
17	24484957
18	93339173
19	199720270
20	761354199
21	1629089495
22	6210256613
23	13288248522
24	50656169297
25	108390330503

[1, 1, 5, 10, 39, 83, 317, 678, 2585, 5531, 21085, 45116, 171987, 368005, 1402873, 3001764, 11443033, 24484957, 93339173, 199720270, 761354199, 1629089495, 6210256613, 13288248522, 50656169297, 108390330503]

cp's OEIS Frontend

A355327 Number of ways to tile a 2 X n board with squares and dominoes where vertical dominoes are only allowed in even-numbered locations.

Table of values

List of values