A112387 - cp's OEIS frontend

A112387 a(n) = 2^(n/2) if n is even and a(n-1) - a(n-2) if n is odd, a(1) = 1.

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	3
6	8
7	5
8	16
9	11
10	32
11	21
12	64
13	43
14	128
15	85
16	256
17	171
18	512
19	341
20	1024
21	683
22	2048
23	1365
24	4096
25	2731
26	8192
27	5461
28	16384
29	10923
30	32768
31	21845
32	65536
33	43691
34	131072
35	87381
36	262144
37	174763
38	524288
39	349525
40	1048576
41	699051
42	2097152
43	1398101
44	4194304

[1, 1, 2, 1, 4, 3, 8, 5, 16, 11, 32, 21, 64, 43, 128, 85, 256, 171, 512, 341, 1024, 683, 2048, 1365, 4096, 2731, 8192, 5461, 16384, 10923, 32768, 21845, 65536, 43691, 131072, 87381, 262144, 174763, 524288, 349525, 1048576, 699051, 2097152, 1398101, 4194304]

cp's OEIS Frontend

A112387 a(n) = 2^(n/2) if n is even and a(n-1) - a(n-2) if n is odd, a(1) = 1.

Table of values

List of values