A385933 - cp's OEIS frontend

A385933 Number of ways to tile a "central bump" strip of length n with 1 X 1 squares and 1 X 3 rectangles.

n	a(n)
0	4
1	9
2	13
3	25
4	30
5	35
6	52
7	78
8	121
9	189
10	271
11	388
12	561
13	812
14	1204
15	1785
16	2617
17	3837
18	5602
19	8179
20	12000
21	17606
22	25825
23	37881
24	55483
25	81264
26	119089
27	174520
28	255828
29	375017
30	549589
31	805425
32	1180342
33	1729779
34	2535196
35	3715630
36	5445561
37	7980917
38	11696455
39	17141772

[4, 9, 13, 25, 30, 35, 52, 78, 121, 189, 271, 388, 561, 812, 1204, 1785, 2617, 3837, 5602, 8179, 12000, 17606, 25825, 37881, 55483, 81264, 119089, 174520, 255828, 375017, 549589, 805425, 1180342, 1729779, 2535196, 3715630, 5445561, 7980917, 11696455, 17141772]

cp's OEIS Frontend

A385933 Number of ways to tile a "central bump" strip of length n with 1 X 1 squares and 1 X 3 rectangles.

Table of values

List of values