A121469 - cp's OEIS frontend

A121469 Triangle read by rows: T(n,k) is the number of directed column-convex polyominoes of area n having k 1-cell columns (0<=k<=n).

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	1
7	3
8	0
9	1
10	3
11	4
12	5
13	0
14	1
15	6
16	13
17	7
18	7
19	0
20	1
21	14
22	28
23	27
24	10
25	9
26	0
27	1
28	31
29	70
30	62
31	45
32	13
33	11
34	0
35	1
36	70
37	164
38	171
39	108
40	67
41	16
42	13
43	0
44	1
45	157
46	392
47	429
48	325
49	166
50	93
51	19
52	15
53	0
54	1
55	353
56	926
57	1101
58	862
59	540
60	236
61	123
62	22
63	17
64	0
65	1
66	793
67	2189
68	2766
69	2355
70	1499
71	824

[1, 0, 1, 1, 0, 1, 1, 3, 0, 1, 3, 4, 5, 0, 1, 6, 13, 7, 7, 0, 1, 14, 28, 27, 10, 9, 0, 1, 31, 70, 62, 45, 13, 11, 0, 1, 70, 164, 171, 108, 67, 16, 13, 0, 1, 157, 392, 429, 325, 166, 93, 19, 15, 0, 1, 353, 926, 1101, 862, 540, 236, 123, 22, 17, 0, 1, 793, 2189, 2766, 2355, 1499, 824]

cp's OEIS Frontend

A121469 Triangle read by rows: T(n,k) is the number of directed column-convex polyominoes of area n having k 1-cell columns (0<=k<=n).

Table of values

List of values