A121692 - cp's OEIS frontend

A121692 Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and vertical height (i.e., number of rows) k (1 <= 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)
1	1
2	1
3	1
4	1
5	4
6	1
7	1
8	10
9	12
10	1
11	1
12	22
13	57
14	39
15	1
16	1
17	46
18	216
19	293
20	163
21	1
22	1
23	94
24	741
25	1651
26	1664
27	888
28	1
29	1
30	190
31	2412
32	8181
33	12458
34	11143
35	5934
36	1
37	1
38	382
39	7617
40	37739
41	81255
42	102558
43	87066
44	46261
45	1
46	1
47	766
48	23616
49	166573
50	489753
51	823597
52	941572
53	773772
54	409149
55	1

[1, 1, 1, 1, 4, 1, 1, 10, 12, 1, 1, 22, 57, 39, 1, 1, 46, 216, 293, 163, 1, 1, 94, 741, 1651, 1664, 888, 1, 1, 190, 2412, 8181, 12458, 11143, 5934, 1, 1, 382, 7617, 37739, 81255, 102558, 87066, 46261, 1, 1, 766, 23616, 166573, 489753, 823597, 941572, 773772, 409149, 1]

cp's OEIS Frontend

A121692 Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and vertical height (i.e., number of rows) k (1 <= 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