A145099 - cp's OEIS frontend

A145099 a(n) = 1 if the largest proper divisor of Mersenne composite A145097(n) is prime and a(n) = 0 in opposite case.

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

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

cp's OEIS Frontend

A145099 a(n) = 1 if the largest proper divisor of Mersenne composite A145097(n) is prime and a(n) = 0 in opposite case.

Table of values

List of values

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

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

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