A073445 - cp's OEIS frontend

A073445 Second differences of A002808, the sequence of composites.

n	a(n)
1	0
2	-1
3	0
4	1
5	0
6	-1
7	0
8	1
9	0
10	-1
11	0
12	1
13	-1
14	0
15	0
16	0
17	1
18	0
19	-1
20	0
21	0
22	0
23	1
24	-1
25	0
26	1
27	0
28	-1
29	0
30	1
31	-1
32	0
33	0
34	0
35	1
36	-1
37	0
38	0
39	0
40	1
41	0
42	-1
43	0
44	0
45	0
46	1
47	-1
48	0
49	1
50	0
51	-1
52	0
53	0
54	0
55	1
56	-1
57	0
58	1
59	-1
60	0
61	0
62	0
63	1
64	-1
65	0
66	0
67	0
68	0
69	0
70	1
71	-1
72	0
73	1
74	0
75	-1
76	0
77	1
78	0
79	-1
80	0
81	1
82	-1
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	1
95	-1
96	0
97	1
98	-1
99	0
100	0
101	0
102	1
103	0
104	-1
105	0
106	0
107	0
108	0
109	0
110	0
111	0
112	1
113	0
114	-1
115	0

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

cp's OEIS Frontend

A073445 Second differences of A002808, the sequence of composites.

Table of values

List of values

n	a(n)
1	0
2	-1
3	0
4	1
5	0
6	-1
7	0
8	1
9	0
10	-1
11	0
12	1
13	-1
14	0
15	0
16	0
17	1
18	0
19	-1
20	0
21	0
22	0
23	1
24	-1
25	0
26	1
27	0
28	-1
29	0
30	1
31	-1
32	0
33	0
34	0
35	1
36	-1
37	0
38	0
39	0
40	1
41	0
42	-1
43	0
44	0
45	0
46	1
47	-1
48	0
49	1
50	0
51	-1
52	0
53	0
54	0
55	1
56	-1
57	0
58	1
59	-1
60	0
61	0
62	0
63	1
64	-1
65	0
66	0
67	0
68	0
69	0
70	1
71	-1
72	0
73	1
74	0
75	-1
76	0
77	1
78	0
79	-1
80	0
81	1
82	-1
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	1
95	-1
96	0
97	1
98	-1
99	0
100	0
101	0
102	1
103	0
104	-1
105	0
106	0
107	0
108	0
109	0
110	0
111	0
112	1
113	0
114	-1
115	0

n	a(n)
1	0
2	-1
3	0
4	1
5	0
6	-1
7	0
8	1
9	0
10	-1
11	0
12	1
13	-1
14	0
15	0
16	0
17	1
18	0
19	-1
20	0
21	0
22	0
23	1
24	-1
25	0
26	1
27	0
28	-1
29	0
30	1
31	-1
32	0
33	0
34	0
35	1
36	-1
37	0
38	0
39	0
40	1
41	0
42	-1
43	0
44	0
45	0
46	1
47	-1
48	0
49	1
50	0
51	-1
52	0
53	0
54	0
55	1
56	-1
57	0
58	1
59	-1
60	0
61	0
62	0
63	1
64	-1
65	0
66	0
67	0
68	0
69	0
70	1
71	-1
72	0
73	1
74	0
75	-1
76	0
77	1
78	0
79	-1
80	0
81	1
82	-1
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	1
95	-1
96	0
97	1
98	-1
99	0
100	0
101	0
102	1
103	0
104	-1
105	0
106	0
107	0
108	0
109	0
110	0
111	0
112	1
113	0
114	-1
115	0

n	a(n)
1	0
2	-1
3	0
4	1
5	0
6	-1
7	0
8	1
9	0
10	-1
11	0
12	1
13	-1
14	0
15	0
16	0
17	1
18	0
19	-1
20	0
21	0
22	0
23	1
24	-1
25	0
26	1
27	0
28	-1
29	0
30	1
31	-1
32	0
33	0
34	0
35	1
36	-1
37	0
38	0
39	0
40	1
41	0
42	-1
43	0
44	0
45	0
46	1
47	-1
48	0
49	1
50	0
51	-1
52	0
53	0
54	0
55	1
56	-1
57	0
58	1
59	-1
60	0
61	0
62	0
63	1
64	-1
65	0
66	0
67	0
68	0
69	0
70	1
71	-1
72	0
73	1
74	0
75	-1
76	0
77	1
78	0
79	-1
80	0
81	1
82	-1
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	1
95	-1
96	0
97	1
98	-1
99	0
100	0
101	0
102	1
103	0
104	-1
105	0
106	0
107	0
108	0
109	0
110	0
111	0
112	1
113	0
114	-1
115	0