A144722 - cp's OEIS frontend

A144722 a(n) is the smallest positive integer m such that b * (Product_{k=1..n} a(k)) + 1 is prime, with b = 3.

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	21
7	23
8	26
9	30
10	36
11	37
12	39
13	42
14	54
15	57
16	73
17	83
18	86
19	88
20	91
21	93
22	98
23	99
24	112
25	120
26	137
27	140
28	142
29	148
30	161
31	162
32	169
33	171
34	174
35	179
36	237
37	247
38	294
39	312
40	335
41	340
42	382
43	474
44	475
45	484
46	498
47	500
48	539
49	589
50	598
51	653
52	654
53	660
54	704
55	720
56	732
57	789
58	804

[2, 3, 4, 6, 8, 21, 23, 26, 30, 36, 37, 39, 42, 54, 57, 73, 83, 86, 88, 91, 93, 98, 99, 112, 120, 137, 140, 142, 148, 161, 162, 169, 171, 174, 179, 237, 247, 294, 312, 335, 340, 382, 474, 475, 484, 498, 500, 539, 589, 598, 653, 654, 660, 704, 720, 732, 789, 804]

cp's OEIS Frontend

A144722 a(n) is the smallest positive integer m such that b * (Product_{k=1..n} a(k)) + 1 is prime, with b = 3.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	21
7	23
8	26
9	30
10	36
11	37
12	39
13	42
14	54
15	57
16	73
17	83
18	86
19	88
20	91
21	93
22	98
23	99
24	112
25	120
26	137
27	140
28	142
29	148
30	161
31	162
32	169
33	171
34	174
35	179
36	237
37	247
38	294
39	312
40	335
41	340
42	382
43	474
44	475
45	484
46	498
47	500
48	539
49	589
50	598
51	653
52	654
53	660
54	704
55	720
56	732
57	789
58	804

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	21
7	23
8	26
9	30
10	36
11	37
12	39
13	42
14	54
15	57
16	73
17	83
18	86
19	88
20	91
21	93
22	98
23	99
24	112
25	120
26	137
27	140
28	142
29	148
30	161
31	162
32	169
33	171
34	174
35	179
36	237
37	247
38	294
39	312
40	335
41	340
42	382
43	474
44	475
45	484
46	498
47	500
48	539
49	589
50	598
51	653
52	654
53	660
54	704
55	720
56	732
57	789
58	804

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	21
7	23
8	26
9	30
10	36
11	37
12	39
13	42
14	54
15	57
16	73
17	83
18	86
19	88
20	91
21	93
22	98
23	99
24	112
25	120
26	137
27	140
28	142
29	148
30	161
31	162
32	169
33	171
34	174
35	179
36	237
37	247
38	294
39	312
40	335
41	340
42	382
43	474
44	475
45	484
46	498
47	500
48	539
49	589
50	598
51	653
52	654
53	660
54	704
55	720
56	732
57	789
58	804