A078592 - cp's OEIS frontend

A078592 Call two meanders from A005316 with 2n crossings equivalent if they differ by reflections in the X or Y axes. Sequence gives number of inequivalent meanders.

n	a(n)
0	1
1	1
2	2
3	8
4	42
5	273
6	1970
7	15368
8	126510
9	1086546
10	9652364
11	88172609
12	824506191
13	7865294687
14	76331857094
15	751981532942
16	7506432993145
17	75811326673326
18	773682540353704
19	7969986193751019
20	82798726340037900
21	866804540900696571

[1, 1, 2, 8, 42, 273, 1970, 15368, 126510, 1086546, 9652364, 88172609, 824506191, 7865294687, 76331857094, 751981532942, 7506432993145, 75811326673326, 773682540353704, 7969986193751019, 82798726340037900, 866804540900696571]

cp's OEIS Frontend

A078592 Call two meanders from A005316 with 2n crossings equivalent if they differ by reflections in the X or Y axes. Sequence gives number of inequivalent meanders.

Table of values

List of values