A317825 - cp's OEIS frontend

A317825 a(1) = 1, a(n) = 3*a(n/2) if n is even, a(n) = n - a(n-1) if n is odd.

n	a(n)
1	1
2	3
3	0
4	9
5	-4
6	0
7	7
8	27
9	-18
10	-12
11	23
12	0
13	13
14	21
15	-6
16	81
17	-64
18	-54
19	73
20	-36
21	57
22	69
23	-46
24	0
25	25
26	39
27	-12
28	63
29	-34
30	-18
31	49
32	243
33	-210
34	-192
35	227
36	-162
37	199
38	219
39	-180
40	-108
41	149
42	171
43	-128
44	207
45	-162
46	-138
47	185
48	0
49	49
50	75
51	-24
52	117
53	-64
54	-36
55	91
56	189
57	-132
58	-102
59	161
60	-54
61	115
62	147
63	-84
64	729
65	-664
66	-630
67	697
68	-576

[1, 3, 0, 9, -4, 0, 7, 27, -18, -12, 23, 0, 13, 21, -6, 81, -64, -54, 73, -36, 57, 69, -46, 0, 25, 39, -12, 63, -34, -18, 49, 243, -210, -192, 227, -162, 199, 219, -180, -108, 149, 171, -128, 207, -162, -138, 185, 0, 49, 75, -24, 117, -64, -36, 91, 189, -132, -102, 161, -54, 115, 147, -84, 729, -664, -630, 697, -576]

cp's OEIS Frontend

A317825 a(1) = 1, a(n) = 3*a(n/2) if n is even, a(n) = n - a(n-1) if n is odd.

Table of values

List of values