A121758 - cp's OEIS frontend

A121758 In decimal number system, take odd digits of n with negative sign.

n	a(n)
1	-1
2	2
3	-3
4	4
5	-5
6	6
7	-7
8	8
9	-9
10	-10
11	-11
12	-8
13	-13
14	-6
15	-15
16	-4
17	-17
18	-2
19	-19
20	20
21	19
22	22
23	17
24	24
25	15
26	26
27	13
28	28
29	11
30	-30
31	-31
32	-28
33	-33
34	-26
35	-35
36	-24
37	-37
38	-22
39	-39
40	40
41	39
42	42
43	37
44	44
45	35
46	46
47	33
48	48
49	31
50	-50
51	-51
52	-48
53	-53
54	-46
55	-55
56	-44
57	-57
58	-42
59	-59
60	60
61	59
62	62
63	57
64	64
65	55
66	66
67	53
68	68
69	51
70	-70
71	-71
72	-68
73	-73
74	-66
75	-75
76	-64

[-1, 2, -3, 4, -5, 6, -7, 8, -9, -10, -11, -8, -13, -6, -15, -4, -17, -2, -19, 20, 19, 22, 17, 24, 15, 26, 13, 28, 11, -30, -31, -28, -33, -26, -35, -24, -37, -22, -39, 40, 39, 42, 37, 44, 35, 46, 33, 48, 31, -50, -51, -48, -53, -46, -55, -44, -57, -42, -59, 60, 59, 62, 57, 64, 55, 66, 53, 68, 51, -70, -71, -68, -73, -66, -75, -64]

cp's OEIS Frontend

A121758 In decimal number system, take odd digits of n with negative sign.

Table of values

List of values

n	a(n)
1	-1
2	2
3	-3
4	4
5	-5
6	6
7	-7
8	8
9	-9
10	-10
11	-11
12	-8
13	-13
14	-6
15	-15
16	-4
17	-17
18	-2
19	-19
20	20
21	19
22	22
23	17
24	24
25	15
26	26
27	13
28	28
29	11
30	-30
31	-31
32	-28
33	-33
34	-26
35	-35
36	-24
37	-37
38	-22
39	-39
40	40
41	39
42	42
43	37
44	44
45	35
46	46
47	33
48	48
49	31
50	-50
51	-51
52	-48
53	-53
54	-46
55	-55
56	-44
57	-57
58	-42
59	-59
60	60
61	59
62	62
63	57
64	64
65	55
66	66
67	53
68	68
69	51
70	-70
71	-71
72	-68
73	-73
74	-66
75	-75
76	-64

n	a(n)
1	-1
2	2
3	-3
4	4
5	-5
6	6
7	-7
8	8
9	-9
10	-10
11	-11
12	-8
13	-13
14	-6
15	-15
16	-4
17	-17
18	-2
19	-19
20	20
21	19
22	22
23	17
24	24
25	15
26	26
27	13
28	28
29	11
30	-30
31	-31
32	-28
33	-33
34	-26
35	-35
36	-24
37	-37
38	-22
39	-39
40	40
41	39
42	42
43	37
44	44
45	35
46	46
47	33
48	48
49	31
50	-50
51	-51
52	-48
53	-53
54	-46
55	-55
56	-44
57	-57
58	-42
59	-59
60	60
61	59
62	62
63	57
64	64
65	55
66	66
67	53
68	68
69	51
70	-70
71	-71
72	-68
73	-73
74	-66
75	-75
76	-64

n	a(n)
1	-1
2	2
3	-3
4	4
5	-5
6	6
7	-7
8	8
9	-9
10	-10
11	-11
12	-8
13	-13
14	-6
15	-15
16	-4
17	-17
18	-2
19	-19
20	20
21	19
22	22
23	17
24	24
25	15
26	26
27	13
28	28
29	11
30	-30
31	-31
32	-28
33	-33
34	-26
35	-35
36	-24
37	-37
38	-22
39	-39
40	40
41	39
42	42
43	37
44	44
45	35
46	46
47	33
48	48
49	31
50	-50
51	-51
52	-48
53	-53
54	-46
55	-55
56	-44
57	-57
58	-42
59	-59
60	60
61	59
62	62
63	57
64	64
65	55
66	66
67	53
68	68
69	51
70	-70
71	-71
72	-68
73	-73
74	-66
75	-75
76	-64