A121753 - cp's OEIS frontend

A121753 Number of deco polyominoes of height n in which all columns end at an odd level. 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	2
4	6
5	16
6	62
7	230
8	1114
9	5268
10	30702
11	176226
12	1201638
13	8107464
14	63339702
15	491010102
16	4324845834
17	37867131900
18	371275954758
19	3623124865986
20	39137296073094
21	421150512316032
22	4969568447400366
23	58455531552960198

[1, 1, 2, 6, 16, 62, 230, 1114, 5268, 30702, 176226, 1201638, 8107464, 63339702, 491010102, 4324845834, 37867131900, 371275954758, 3623124865986, 39137296073094, 421150512316032, 4969568447400366, 58455531552960198]

cp's OEIS Frontend

A121753 Number of deco polyominoes of height n in which all columns end at an odd level. 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