A127793 - cp's OEIS frontend

A127793 Inverse of number triangle A(n,k) = 1/floor((n+2)/2) if k <= n <= 2k, 0 otherwise.

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

[1, 0, 1, 0, -1, 2, 0, 1, -2, 2, 0, 0, 0, -2, 3, 0, -1, 2, 0, -3, 3, 0, 0, 0, 0, 0, -3, 4, 0, 1, -2, 2, 0, 0, -4, 4, 0, 0, 0, 0, 0, 0, 0, -4, 5, 0, 0, 0, -2, 3, 0, 0, 0, -5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, -5, 6]

cp's OEIS Frontend

A127793 Inverse of number triangle A(n,k) = 1/floor((n+2)/2) if k <= n <= 2k, 0 otherwise.

Table of values

List of values

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

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

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