A303404 - cp's OEIS frontend

A303404 a(0) = 0, a(1) = 1; for n >= 1, a(2n) = a(2n-1) - 2a(n), a(2n+1) = n - 2*a(n).

n	a(n)
0	0
1	1
2	-1
3	-1
4	1
5	4
6	6
7	5
8	3
9	2
10	-6
11	-3
12	-15
13	-6
14	-16
15	-3
16	-9
17	2
18	-2
19	5
20	17
21	22
22	28
23	17
24	47
25	42
26	54
27	25
28	57
29	46
30	52
31	21
32	39
33	34
34	30
35	13
36	17
37	22
38	12
39	9
40	-25
41	-14
42	-58
43	-23
44	-79
45	-34
46	-68
47	-11
48	-105
49	-70
50	-154
51	-59
52	-167
53	-82
54	-132
55	-23
56	-137
57	-86
58	-178
59	-63
60	-167
61	-74
62	-116
63	-11
64	-89
65	-46
66	-114
67	-35
68	-95
69	-26
70	-52
71	9

[0, 1, -1, -1, 1, 4, 6, 5, 3, 2, -6, -3, -15, -6, -16, -3, -9, 2, -2, 5, 17, 22, 28, 17, 47, 42, 54, 25, 57, 46, 52, 21, 39, 34, 30, 13, 17, 22, 12, 9, -25, -14, -58, -23, -79, -34, -68, -11, -105, -70, -154, -59, -167, -82, -132, -23, -137, -86, -178, -63, -167, -74, -116, -11, -89, -46, -114, -35, -95, -26, -52, 9]

cp's OEIS Frontend

A303404 a(0) = 0, a(1) = 1; for n >= 1, a(2n) = a(2n-1) - 2a(n), a(2n+1) = n - 2*a(n).

Table of values

List of values

cp's OEIS Frontend

A303404 a(0) = 0, a(1) = 1; for n >= 1, a(2*n) = a(2*n-1) - 2*a(n), a(2*n+1) = n - 2*a(n).

Table of values

List of values

A303404 a(0) = 0, a(1) = 1; for n >= 1, a(2n) = a(2n-1) - 2a(n), a(2n+1) = n - 2*a(n).