A121691 - cp's OEIS frontend

A121691 Number of deco polyominoes of area 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	4
4	10
5	24
6	62
7	158
8	410
9	1064
10	2774
11	7236
12	18908
13	49428
14	129286
15	338254
16	885188
17	2316766
18	6064184
19	15874084
20	41555086
21	108785772
22	284792646
23	745574864
24	1951901064
25	5110072712
26	13378217392
27	35024400076
28	91694660704
29	240059002292

[1, 2, 4, 10, 24, 62, 158, 410, 1064, 2774, 7236, 18908, 49428, 129286, 338254, 885188, 2316766, 6064184, 15874084, 41555086, 108785772, 284792646, 745574864, 1951901064, 5110072712, 13378217392, 35024400076, 91694660704, 240059002292]

cp's OEIS Frontend

A121691 Number of deco polyominoes of area 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