A282459 - cp's OEIS frontend

A282459 Number of composite numbers of the form 2n - 2^k + 1 (k > 0, 2^k < 2n + 1).

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

[0, 0, 0, 0, 0, 1, 1, 0, 2, 1, 0, 2, 2, 1, 3, 2, 1, 2, 3, 1, 4, 3, 0, 3, 2, 2, 4, 2, 3, 4, 2, 1, 4, 4, 1, 4, 4, 0, 3, 4, 3, 3, 4, 2, 5, 3, 3, 4, 5, 3, 4, 4, 0, 4, 4, 1, 4, 3, 2, 5, 4, 4, 4, 6, 3, 4, 4, 2, 6, 3, 3, 4, 4, 3, 7, 5, 3, 5, 5, 3, 5, 6, 2, 4, 4, 2, 5, 4, 5, 6, 3, 3, 6, 5, 3, 6, 6, 1, 5, 3, 2, 5, 5, 4, 6, 5, 3, 4, 6]

cp's OEIS Frontend

A282459 Number of composite numbers of the form 2n - 2^k + 1 (k > 0, 2^k < 2n + 1).

Table of values

List of values

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

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

cp's OEIS Frontend

A282459 Number of composite numbers of the form 2*n - 2^k + 1 (k > 0, 2^k < 2*n + 1).

Table of values

List of values

A282459 Number of composite numbers of the form 2n - 2^k + 1 (k > 0, 2^k < 2n + 1).

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