A318553 - cp's OEIS frontend

A318553 a(1) = 1, a(n) = -5*a(n/3) if n is divisible by 3, a(n) = n - a(n-1) if n + 1 is divisible by 3, otherwise a(n) = n + a(n-1).

n	a(n)
1	1
2	1
3	-5
4	-1
5	6
6	-5
7	2
8	6
9	25
10	35
11	-24
12	5
13	18
14	-4
15	-30
16	-14
17	31
18	25
19	44
20	-24
21	-10
22	12
23	11
24	-30
25	-5
26	31
27	-125
28	-97
29	126
30	-175
31	-144
32	176
33	120
34	154
35	-119
36	-25
37	12
38	26
39	-90
40	-50
41	91
42	20
43	63
44	-19
45	150
46	196
47	-149
48	70
49	119
50	-69
51	-155
52	-103
53	156
54	-125
55	-70
56	126
57	-220
58	-162
59	221
60	120
61	181
62	-119
63	50
64	114
65	-49
66	-60
67	7
68	61

[1, 1, -5, -1, 6, -5, 2, 6, 25, 35, -24, 5, 18, -4, -30, -14, 31, 25, 44, -24, -10, 12, 11, -30, -5, 31, -125, -97, 126, -175, -144, 176, 120, 154, -119, -25, 12, 26, -90, -50, 91, 20, 63, -19, 150, 196, -149, 70, 119, -69, -155, -103, 156, -125, -70, 126, -220, -162, 221, 120, 181, -119, 50, 114, -49, -60, 7, 61]

cp's OEIS Frontend

A318553 a(1) = 1, a(n) = -5*a(n/3) if n is divisible by 3, a(n) = n - a(n-1) if n + 1 is divisible by 3, otherwise a(n) = n + a(n-1).

Table of values

List of values