A032702 - cp's OEIS frontend

A032702 Numbers k such that k prefixed by '2' and followed by '1' is prime.

n	a(n)
1	1
2	4
3	5
4	7
5	8
6	11
7	13
8	14
9	16
10	22
11	25
12	28
13	31
14	34
15	35
16	37
17	38
18	41
19	44
20	52
21	53
22	55
23	59
24	62
25	67
26	71
27	73
28	74
29	79
30	80
31	85
32	86
33	97
34	100
35	101
36	103
37	106
38	110
39	112
40	119
41	121
42	122
43	134
44	139
45	140
46	148
47	149
48	152
49	160
50	161
51	166
52	170
53	175
54	182
55	184
56	185
57	187
58	188
59	191
60	196

[1, 4, 5, 7, 8, 11, 13, 14, 16, 22, 25, 28, 31, 34, 35, 37, 38, 41, 44, 52, 53, 55, 59, 62, 67, 71, 73, 74, 79, 80, 85, 86, 97, 100, 101, 103, 106, 110, 112, 119, 121, 122, 134, 139, 140, 148, 149, 152, 160, 161, 166, 170, 175, 182, 184, 185, 187, 188, 191, 196]

cp's OEIS Frontend

A032702 Numbers k such that k prefixed by '2' and followed by '1' is prime.

Table of values

List of values

n	a(n)
1	1
2	4
3	5
4	7
5	8
6	11
7	13
8	14
9	16
10	22
11	25
12	28
13	31
14	34
15	35
16	37
17	38
18	41
19	44
20	52
21	53
22	55
23	59
24	62
25	67
26	71
27	73
28	74
29	79
30	80
31	85
32	86
33	97
34	100
35	101
36	103
37	106
38	110
39	112
40	119
41	121
42	122
43	134
44	139
45	140
46	148
47	149
48	152
49	160
50	161
51	166
52	170
53	175
54	182
55	184
56	185
57	187
58	188
59	191
60	196

n	a(n)
1	1
2	4
3	5
4	7
5	8
6	11
7	13
8	14
9	16
10	22
11	25
12	28
13	31
14	34
15	35
16	37
17	38
18	41
19	44
20	52
21	53
22	55
23	59
24	62
25	67
26	71
27	73
28	74
29	79
30	80
31	85
32	86
33	97
34	100
35	101
36	103
37	106
38	110
39	112
40	119
41	121
42	122
43	134
44	139
45	140
46	148
47	149
48	152
49	160
50	161
51	166
52	170
53	175
54	182
55	184
56	185
57	187
58	188
59	191
60	196

n	a(n)
1	1
2	4
3	5
4	7
5	8
6	11
7	13
8	14
9	16
10	22
11	25
12	28
13	31
14	34
15	35
16	37
17	38
18	41
19	44
20	52
21	53
22	55
23	59
24	62
25	67
26	71
27	73
28	74
29	79
30	80
31	85
32	86
33	97
34	100
35	101
36	103
37	106
38	110
39	112
40	119
41	121
42	122
43	134
44	139
45	140
46	148
47	149
48	152
49	160
50	161
51	166
52	170
53	175
54	182
55	184
56	185
57	187
58	188
59	191
60	196