A380284 - cp's OEIS frontend

A380284 Triangle read by rows: T(n,k) is the number of regions between the free polyominoes, with n cells and length k, and their bounding boxes, n >= 1, k >= 1.

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	0
9	5
10	0
11	0
12	0
13	16
14	5
15	0
16	0
17	0
18	14
19	48
20	9
21	0
22	0
23	0
24	12
25	145
26	89
27	9
28	0
29	0
30	0
31	3
32	354
33	453
34	138
35	13
36	0
37	0
38	0
39	0
40	608
41	1930
42	876
43	203
44	13
45	0
46	0
47	0
48	0
49	804
50	6348
51	4930
52	1598
53	276
54	17
55	0
56	0
57	0
58	0
59	721
60	17509
61	22575
62	10197
63	2554
64	365
65	17
66	0
67	0
68	0
69	0
70	454
71	40067
72	91007
73	54691
74	18984
75	3955
76	462
77	21
78	0

[0, 0, 0, 0, 1, 0, 0, 0, 5, 0, 0, 0, 16, 5, 0, 0, 0, 14, 48, 9, 0, 0, 0, 12, 145, 89, 9, 0, 0, 0, 3, 354, 453, 138, 13, 0, 0, 0, 0, 608, 1930, 876, 203, 13, 0, 0, 0, 0, 804, 6348, 4930, 1598, 276, 17, 0, 0, 0, 0, 721, 17509, 22575, 10197, 2554, 365, 17, 0, 0, 0, 0, 454, 40067, 91007, 54691, 18984, 3955, 462, 21, 0]

cp's OEIS Frontend

A380284 Triangle read by rows: T(n,k) is the number of regions between the free polyominoes, with n cells and length k, and their bounding boxes, n >= 1, k >= 1.

Table of values

List of values