A365679 - cp's OEIS frontend

A365679 a(n) is the number of exterior top arches (no covering arch) for semi-meanders in generation n+1 that are generated by semi-meanders with n top arches and floor((n+2)/2) exterior top arches using the exterior arch splitting algorithm.

n	a(n)
2	4
3	10
4	14
5	32
6	40
7	88
8	104
9	224
10	256
11	544
12	608
13	1280
14	1408
15	2944
16	3200
17	6656
18	7168
19	14848
20	15872
21	32768
22	34816
23	71680
24	75776
25	155648
26	163840
27	335872
28	352256
29	720896
30	753664
31	1540096
32	1605632
33	3276800
34	3407872
35	6946816
36	7208960
37	14680064

[4, 10, 14, 32, 40, 88, 104, 224, 256, 544, 608, 1280, 1408, 2944, 3200, 6656, 7168, 14848, 15872, 32768, 34816, 71680, 75776, 155648, 163840, 335872, 352256, 720896, 753664, 1540096, 1605632, 3276800, 3407872, 6946816, 7208960, 14680064]

cp's OEIS Frontend

A365679 a(n) is the number of exterior top arches (no covering arch) for semi-meanders in generation n+1 that are generated by semi-meanders with n top arches and floor((n+2)/2) exterior top arches using the exterior arch splitting algorithm.

Table of values

List of values