A272694 - cp's OEIS frontend

A272694 a(n) = (c(n)+f(c(n)))/2, where c() = A272693() and f(k) = sign(k)*(k mod 2).

n	a(n)
0	0
1	-1
2	-1
3	-3
4	-2
5	-2
6	-2
7	0
8	3
9	1
10	-2
11	-3
12	-4
13	-3
14	1
15	5
16	2
17	-3
18	-5
19	-5
20	-2
21	3
22	6
23	3
24	-5
25	-11
26	-6
27	3
28	7
29	5
30	-3
31	-10
32	-9
33	-2
34	8
35	8
36	1
37	-8
38	-11
39	-6
40	6
41	10
42	5
43	-6
44	-13
45	-9
46	1
47	11
48	8
49	-3
50	-11
51	-11
52	-2
53	9
54	12
55	3
56	-11
57	-17
58	-8
59	9
60	18
61	9
62	-11
63	-23
64	-12
65	9
66	19
67	11
68	-9
69	-22
70	-15
71	4
72	20
73	14
74	-6
75	-20
76	-17
77	2
78	19
79	17

[0, -1, -1, -3, -2, -2, -2, 0, 3, 1, -2, -3, -4, -3, 1, 5, 2, -3, -5, -5, -2, 3, 6, 3, -5, -11, -6, 3, 7, 5, -3, -10, -9, -2, 8, 8, 1, -8, -11, -6, 6, 10, 5, -6, -13, -9, 1, 11, 8, -3, -11, -11, -2, 9, 12, 3, -11, -17, -8, 9, 18, 9, -11, -23, -12, 9, 19, 11, -9, -22, -15, 4, 20, 14, -6, -20, -17, 2, 19, 17]

cp's OEIS Frontend

A272694 a(n) = (c(n)+f(c(n)))/2, where c() = A272693() and f(k) = sign(k)*(k mod 2).

Table of values

List of values

n	a(n)
0	0
1	-1
2	-1
3	-3
4	-2
5	-2
6	-2
7	0
8	3
9	1
10	-2
11	-3
12	-4
13	-3
14	1
15	5
16	2
17	-3
18	-5
19	-5
20	-2
21	3
22	6
23	3
24	-5
25	-11
26	-6
27	3
28	7
29	5
30	-3
31	-10
32	-9
33	-2
34	8
35	8
36	1
37	-8
38	-11
39	-6
40	6
41	10
42	5
43	-6
44	-13
45	-9
46	1
47	11
48	8
49	-3
50	-11
51	-11
52	-2
53	9
54	12
55	3
56	-11
57	-17
58	-8
59	9
60	18
61	9
62	-11
63	-23
64	-12
65	9
66	19
67	11
68	-9
69	-22
70	-15
71	4
72	20
73	14
74	-6
75	-20
76	-17
77	2
78	19
79	17

n	a(n)
0	0
1	-1
2	-1
3	-3
4	-2
5	-2
6	-2
7	0
8	3
9	1
10	-2
11	-3
12	-4
13	-3
14	1
15	5
16	2
17	-3
18	-5
19	-5
20	-2
21	3
22	6
23	3
24	-5
25	-11
26	-6
27	3
28	7
29	5
30	-3
31	-10
32	-9
33	-2
34	8
35	8
36	1
37	-8
38	-11
39	-6
40	6
41	10
42	5
43	-6
44	-13
45	-9
46	1
47	11
48	8
49	-3
50	-11
51	-11
52	-2
53	9
54	12
55	3
56	-11
57	-17
58	-8
59	9
60	18
61	9
62	-11
63	-23
64	-12
65	9
66	19
67	11
68	-9
69	-22
70	-15
71	4
72	20
73	14
74	-6
75	-20
76	-17
77	2
78	19
79	17

n	a(n)
0	0
1	-1
2	-1
3	-3
4	-2
5	-2
6	-2
7	0
8	3
9	1
10	-2
11	-3
12	-4
13	-3
14	1
15	5
16	2
17	-3
18	-5
19	-5
20	-2
21	3
22	6
23	3
24	-5
25	-11
26	-6
27	3
28	7
29	5
30	-3
31	-10
32	-9
33	-2
34	8
35	8
36	1
37	-8
38	-11
39	-6
40	6
41	10
42	5
43	-6
44	-13
45	-9
46	1
47	11
48	8
49	-3
50	-11
51	-11
52	-2
53	9
54	12
55	3
56	-11
57	-17
58	-8
59	9
60	18
61	9
62	-11
63	-23
64	-12
65	9
66	19
67	11
68	-9
69	-22
70	-15
71	4
72	20
73	14
74	-6
75	-20
76	-17
77	2
78	19
79	17