A227959 - cp's OEIS frontend

A227959 Number of tilings using monominoes and L-trominoes in 2 X n chessboard, such that three monominoes cannot occur together in shape of L-tromino.

n	a(n)
0	1
1	1
2	4
3	6
4	20
5	38
6	104
7	220
8	556
9	1244
10	3024
11	6944
12	16576
13	38536
14	91216
15	213280
16	502864
17	1178928
18	2774592
19	6512864
20	15315072
21	35969952
22	84550912
23	198634048
24	466825152
25	1096838208
26	2577550336
27	6056474880
28	14232064256
29	33441977216
30	78583660288
31	184655188480

[1, 1, 4, 6, 20, 38, 104, 220, 556, 1244, 3024, 6944, 16576, 38536, 91216, 213280, 502864, 1178928, 2774592, 6512864, 15315072, 35969952, 84550912, 198634048, 466825152, 1096838208, 2577550336, 6056474880, 14232064256, 33441977216, 78583660288, 184655188480]

cp's OEIS Frontend

A227959 Number of tilings using monominoes and L-trominoes in 2 X n chessboard, such that three monominoes cannot occur together in shape of L-tromino.

Table of values

List of values