A245660 - cp's OEIS frontend

A245660 Number of unitary polyominoes without holes with n cells. A unitary polyomino is a polyomino whose edges all have length 1.

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	2
12	1
13	2
14	4
15	5
16	4
17	12
18	13
19	20
20	29
21	52
22	67
23	106
24	173
25	269
26	375
27	658
28	991
29	1512
30	2425
31	3896
32	5902
33	9454
34	15146
35	23601
36	37050
37	59908
38	93777
39	148151
40	237228
41	375893
42	593773
43	948623
44	1508823
45	2393035
46	3812023
47	6083290
48	9666024
49	15404085
50	24592209

[1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 2, 1, 2, 4, 5, 4, 12, 13, 20, 29, 52, 67, 106, 173, 269, 375, 658, 991, 1512, 2425, 3896, 5902, 9454, 15146, 23601, 37050, 59908, 93777, 148151, 237228, 375893, 593773, 948623, 1508823, 2393035, 3812023, 6083290, 9666024, 15404085, 24592209]

cp's OEIS Frontend

A245660 Number of unitary polyominoes without holes with n cells. A unitary polyomino is a polyomino whose edges all have length 1.

Table of values

List of values