A121554 - cp's OEIS frontend

A121554 Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k 1-cell columns (0<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	2
7	2
8	1
9	1
10	7
11	7
12	6
13	3
14	1
15	30
16	35
17	30
18	18
19	6
20	1
21	157
22	205
23	184
24	117
25	46
26	10
27	1
28	972
29	1392
30	1304
31	874
32	381
33	101
34	15
35	1
36	6961
37	10764
38	10499
39	7355
40	3470
41	1052
42	197
43	21
44	1
45	56660
46	93493
47	94668
48	68909
49	34622
50	11606
51	2542
52	351
53	28
54	1
55	516901
56	901900

[1, 0, 1, 1, 0, 1, 2, 2, 1, 1, 7, 7, 6, 3, 1, 30, 35, 30, 18, 6, 1, 157, 205, 184, 117, 46, 10, 1, 972, 1392, 1304, 874, 381, 101, 15, 1, 6961, 10764, 10499, 7355, 3470, 1052, 197, 21, 1, 56660, 93493, 94668, 68909, 34622, 11606, 2542, 351, 28, 1, 516901, 901900]

cp's OEIS Frontend

A121554 Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k 1-cell columns (0<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.

Table of values

List of values