A380282 - cp's OEIS frontend

A380282 Irregular triangle read by rows: T(n,k) is the number of free polyominoes with n cells having k regions between the polyominoes and their bounding boxes, n >= 1, k >= 0.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	2
8	1
9	4
10	5
11	1
12	1
13	2
14	6
15	18
16	7
17	2
18	1
19	13
20	50
21	34
22	10
23	2
24	25
25	144
26	146
27	50
28	2
29	2
30	48
31	402
32	574
33	240
34	18
35	1
36	2
37	97
38	1168
39	2142
40	1120
41	122
42	4
43	1
44	201
45	3368
46	7813
47	4920
48	738
49	32
50	3
51	420
52	9977
53	28010
54	20946
55	4015
56	225
57	4
58	1
59	904
60	29856
61	99610
62	86400
63	20221
64	1561
65	37
66	1

[1, 1, 1, 1, 2, 1, 2, 1, 4, 5, 1, 1, 2, 6, 18, 7, 2, 1, 13, 50, 34, 10, 2, 25, 144, 146, 50, 2, 2, 48, 402, 574, 240, 18, 1, 2, 97, 1168, 2142, 1120, 122, 4, 1, 201, 3368, 7813, 4920, 738, 32, 3, 420, 9977, 28010, 20946, 4015, 225, 4, 1, 904, 29856, 99610, 86400, 20221, 1561, 37, 1]

cp's OEIS Frontend

A380282 Irregular triangle read by rows: T(n,k) is the number of free polyominoes with n cells having k regions between the polyominoes and their bounding boxes, n >= 1, k >= 0.

Table of values

List of values