A380369 - cp's OEIS frontend

A380369 Triangle read by rows: T(n,k) is the number of open meanders with 2n crossings and k exterior top arches, 0 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	2
5	1
6	0
7	7
8	6
9	1
10	0
11	36
12	32
13	12
14	1
15	0
16	221
17	202
18	94
19	20
20	1
21	0
22	1530
23	1417
24	728
25	220
26	30
27	1
28	0
29	11510
30	10752
31	5854
32	2090
33	445
34	42
35	1
36	0
37	92114
38	86554
39	48942
40	19300
41	5160
42	812
43	56
44	1
45	0
46	773259
47	729716
48	423778
49	178478
50	54758
51	11396
52	1372
53	72
54	1
55	0
56	6743122
57	6384353
58	3781926
59	1669062
60	561514
61	138866
62	23072
63	2184
64	90
65	1

[1, 0, 1, 0, 2, 1, 0, 7, 6, 1, 0, 36, 32, 12, 1, 0, 221, 202, 94, 20, 1, 0, 1530, 1417, 728, 220, 30, 1, 0, 11510, 10752, 5854, 2090, 445, 42, 1, 0, 92114, 86554, 48942, 19300, 5160, 812, 56, 1, 0, 773259, 729716, 423778, 178478, 54758, 11396, 1372, 72, 1, 0, 6743122, 6384353, 3781926, 1669062, 561514, 138866, 23072, 2184, 90, 1]

cp's OEIS Frontend

A380369 Triangle read by rows: T(n,k) is the number of open meanders with 2n crossings and k exterior top arches, 0 <= k <= n.

Table of values

List of values