A121468 - cp's OEIS frontend

A121468 Triangle read by rows: T(n,k) is the number of k-cell columns in all directed column-convex polyominoes of area n (1<=k<=n).

n	a(n)
1	1
2	2
3	1
4	6
5	3
6	1
7	18
8	9
9	4
10	1
11	53
12	28
13	12
14	5
15	1
16	154
17	85
18	38
19	15
20	6
21	1
22	443
23	253
24	117
25	48
26	18
27	7
28	1
29	1264
30	742
31	352
32	149
33	58
34	21
35	8
36	1
37	3582
38	2151
39	1041
40	451
41	181
42	68
43	24
44	9
45	1
46	10092
47	6177
48	3038
49	1340
50	550
51	213
52	78
53	27
54	10
55	1
56	28291
57	17600
58	8772
59	3925
60	1639
61	649
62	245
63	88
64	30
65	11
66	1

[1, 2, 1, 6, 3, 1, 18, 9, 4, 1, 53, 28, 12, 5, 1, 154, 85, 38, 15, 6, 1, 443, 253, 117, 48, 18, 7, 1, 1264, 742, 352, 149, 58, 21, 8, 1, 3582, 2151, 1041, 451, 181, 68, 24, 9, 1, 10092, 6177, 3038, 1340, 550, 213, 78, 27, 10, 1, 28291, 17600, 8772, 3925, 1639, 649, 245, 88, 30, 11, 1]

cp's OEIS Frontend

A121468 Triangle read by rows: T(n,k) is the number of k-cell columns in all directed column-convex polyominoes of area n (1<=k<=n).

Table of values

List of values