A126764 - cp's OEIS frontend

A126764 Number of L-convex polyominoes with n cells, that is, convex polyominoes where any two cells can be connected by a path internal to the polyomino and which has at most 1 change of direction (i.e., one of the four orientations of the letter L).

n	a(n)
0	1
1	1
2	2
3	6
4	15
5	35
6	76
7	156
8	310
9	590
10	1098
11	1984
12	3515
13	6094
14	10398
15	17434
16	28837
17	47038
18	75820
19	120794
20	190479
21	297365
22	460056
23	705576
24	1073473
25	1620680
26	2429352
27	3616580
28	5349359
29	7863564
30	11491946
31	16700534
32	24140606
33	34716813
34	49682700
35	70766326
36	100343410

[1, 1, 2, 6, 15, 35, 76, 156, 310, 590, 1098, 1984, 3515, 6094, 10398, 17434, 28837, 47038, 75820, 120794, 190479, 297365, 460056, 705576, 1073473, 1620680, 2429352, 3616580, 5349359, 7863564, 11491946, 16700534, 24140606, 34716813, 49682700, 70766326, 100343410]

cp's OEIS Frontend

A126764 Number of L-convex polyominoes with n cells, that is, convex polyominoes where any two cells can be connected by a path internal to the polyomino and which has at most 1 change of direction (i.e., one of the four orientations of the letter L).

Table of values

List of values