A255197 - cp's OEIS frontend

A255197 Number of dissections of a convex polygon with n+3 sides that have exactly one triangle, and that triangle shares at least one side with the exterior polygon.

n	a(n)
0	1
1	0
2	5
3	6
4	35
5	80
6	306
7	880
8	3003
9	9384
10	31070
11	100226
12	330015
13	1079392
14	3559001
15	11724930
16	38772445
17	128313480
18	425553513
19	1412911148
20	4697992880
21	15637660896
22	52109660575
23	173809285676
24	580261793715
25	1938778221800
26	6482844907190
27	21692435752290
28	72633495206803

[1, 0, 5, 6, 35, 80, 306, 880, 3003, 9384, 31070, 100226, 330015, 1079392, 3559001, 11724930, 38772445, 128313480, 425553513, 1412911148, 4697992880, 15637660896, 52109660575, 173809285676, 580261793715, 1938778221800, 6482844907190, 21692435752290, 72633495206803]

cp's OEIS Frontend

A255197 Number of dissections of a convex polygon with n+3 sides that have exactly one triangle, and that triangle shares at least one side with the exterior polygon.

Table of values

List of values