A169809 - cp's OEIS frontend

A169809 Array T(n,k) read by antidiagonals: T(n,k) is the number of [n,k]-triangulations in the plane that have reflection symmetry, n >= 0, k >= 0.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	4
9	3
10	2
11	6
12	7
13	10
14	8
15	5
16	8
17	18
18	19
19	29
20	23
21	5
22	18
23	26
24	52
25	57
26	86
27	68
28	14
29	23
30	68
31	82
32	166
33	176
34	266
35	215
36	14
37	56
38	91
39	220
40	270
41	524
42	557
43	844
44	680
45	42
46	70
47	248
48	321
49	769
50	890
51	1722
52	1806
53	2742
54	2226
55	42
56	180
57	318
58	872
59	1151
60	2568
61	2986
62	5664
63	5954
64	9032
65	7327

[1, 1, 1, 1, 2, 1, 2, 3, 4, 3, 2, 6, 7, 10, 8, 5, 8, 18, 19, 29, 23, 5, 18, 26, 52, 57, 86, 68, 14, 23, 68, 82, 166, 176, 266, 215, 14, 56, 91, 220, 270, 524, 557, 844, 680, 42, 70, 248, 321, 769, 890, 1722, 1806, 2742, 2226, 42, 180, 318, 872, 1151, 2568, 2986, 5664, 5954, 9032, 7327]

cp's OEIS Frontend

A169809 Array T(n,k) read by antidiagonals: T(n,k) is the number of [n,k]-triangulations in the plane that have reflection symmetry, n >= 0, k >= 0.

Table of values

List of values