A206706 - cp's OEIS frontend

A206706 Triangle read by rows, T(n,k) n>=0, 0<=k<=n; T(0,0) = -1 and for n > 0 T(n,k) = moebius(n,k+1) - moebius(n,k) where moebius(n,k) = mu(floor(n/k)) if k<>0 and k divides n, 0 otherwise; mu=A008683.

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

[-1, 1, -1, -1, 2, -1, -1, 1, 1, -1, 0, -1, 1, 1, -1, -1, 1, 0, 0, 1, -1, 1, -2, 0, 1, 0, 1, -1, -1, 1, 0, 0, 0, 0, 1, -1, 0, 0, 0, -1, 1, 0, 0, 1, -1, 0, 0, -1, 1, 0, 0, 0, 0, 1, -1, 1, -2, 1, 0, -1, 1, 0, 0, 0, 1, -1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 0]

cp's OEIS Frontend

A206706 Triangle read by rows, T(n,k) n>=0, 0<=k<=n; T(0,0) = -1 and for n > 0 T(n,k) = moebius(n,k+1) - moebius(n,k) where moebius(n,k) = mu(floor(n/k)) if k<>0 and k divides n, 0 otherwise; mu=A008683.

Table of values

List of values

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

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

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