A129682 - cp's OEIS frontend

A129682 Number of ways tiling a 2 X n rectangle with 2 X 1 (domino) and 3 X 1 (tromino) tiles.

n	a(n)
0	1
1	1
2	2
3	4
4	7
5	15
6	30
7	60
8	123
9	249
10	506
11	1030
12	2093
13	4257
14	8658
15	17606
16	35807
17	72821
18	148096
19	301188
20	612531
21	1245717
22	2533444
23	5152318
24	10478383
25	21310119
26	43338854
27	88139182
28	179250591
29	364545863
30	741384936
31	1507770834
32	3066386677
33	6236177973
34	12682652180

[1, 1, 2, 4, 7, 15, 30, 60, 123, 249, 506, 1030, 2093, 4257, 8658, 17606, 35807, 72821, 148096, 301188, 612531, 1245717, 2533444, 5152318, 10478383, 21310119, 43338854, 88139182, 179250591, 364545863, 741384936, 1507770834, 3066386677, 6236177973, 12682652180]

cp's OEIS Frontend

A129682 Number of ways tiling a 2 X n rectangle with 2 X 1 (domino) and 3 X 1 (tromino) tiles.

Table of values

List of values