A121752 - cp's OEIS frontend

A121752 Number of columns ending at an odd level in all deco polyominoes of height 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	2
3	7
4	39
5	235
6	1746
7	14166
8	132408
9	1341432
10	15148080
11	183764880
12	2435607360
13	34406268480
14	523839899520
15	8444375452800
16	145266278169600
17	2631329637350400
18	50481429165619200
19	1015073771517388800

[1, 2, 7, 39, 235, 1746, 14166, 132408, 1341432, 15148080, 183764880, 2435607360, 34406268480, 523839899520, 8444375452800, 145266278169600, 2631329637350400, 50481429165619200, 1015073771517388800]

cp's OEIS Frontend

A121752 Number of columns ending at an odd level in all deco polyominoes of height 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