A350630 - cp's OEIS frontend

A350630 Positive numbers k such that 2k cannot be written as 3^i (i >= 1) plus a prime.

n	a(n)
1	1
2	2
3	9
4	12
5	18
6	21
7	24
8	27
9	30
10	33
11	36
12	39
13	45
14	48
15	51
16	54
17	57
18	60
19	63
20	66
21	69
22	72
23	75
24	78
25	81
26	84
27	87
28	90
29	93
30	96
31	99
32	102
33	105
34	108
35	111
36	114
37	117
38	120
39	126
40	129
41	132
42	135
43	138
44	141
45	144
46	147
47	150
48	153
49	156
50	159
51	162
52	164
53	165
54	168
55	171
56	174
57	177
58	180
59	183
60	186
61	189
62	192

[1, 2, 9, 12, 18, 21, 24, 27, 30, 33, 36, 39, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105, 108, 111, 114, 117, 120, 126, 129, 132, 135, 138, 141, 144, 147, 150, 153, 156, 159, 162, 164, 165, 168, 171, 174, 177, 180, 183, 186, 189, 192]

cp's OEIS Frontend

A350630 Positive numbers k such that 2k cannot be written as 3^i (i >= 1) plus a prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	9
4	12
5	18
6	21
7	24
8	27
9	30
10	33
11	36
12	39
13	45
14	48
15	51
16	54
17	57
18	60
19	63
20	66
21	69
22	72
23	75
24	78
25	81
26	84
27	87
28	90
29	93
30	96
31	99
32	102
33	105
34	108
35	111
36	114
37	117
38	120
39	126
40	129
41	132
42	135
43	138
44	141
45	144
46	147
47	150
48	153
49	156
50	159
51	162
52	164
53	165
54	168
55	171
56	174
57	177
58	180
59	183
60	186
61	189
62	192

n	a(n)
1	1
2	2
3	9
4	12
5	18
6	21
7	24
8	27
9	30
10	33
11	36
12	39
13	45
14	48
15	51
16	54
17	57
18	60
19	63
20	66
21	69
22	72
23	75
24	78
25	81
26	84
27	87
28	90
29	93
30	96
31	99
32	102
33	105
34	108
35	111
36	114
37	117
38	120
39	126
40	129
41	132
42	135
43	138
44	141
45	144
46	147
47	150
48	153
49	156
50	159
51	162
52	164
53	165
54	168
55	171
56	174
57	177
58	180
59	183
60	186
61	189
62	192

n	a(n)
1	1
2	2
3	9
4	12
5	18
6	21
7	24
8	27
9	30
10	33
11	36
12	39
13	45
14	48
15	51
16	54
17	57
18	60
19	63
20	66
21	69
22	72
23	75
24	78
25	81
26	84
27	87
28	90
29	93
30	96
31	99
32	102
33	105
34	108
35	111
36	114
37	117
38	120
39	126
40	129
41	132
42	135
43	138
44	141
45	144
46	147
47	150
48	153
49	156
50	159
51	162
52	164
53	165
54	168
55	171
56	174
57	177
58	180
59	183
60	186
61	189
62	192