A220291 - cp's OEIS frontend

A220291 a(n) is the smallest positive integer that makes p1a(n)+1 divisible by p2, where p1p2 (p1 < p2) is the n-th odd squarefree semiprime.

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

[3, 2, 7, 4, 4, 11, 2, 6, 5, 15, 3, 10, 19, 11, 10, 15, 12, 9, 12, 27, 14, 8, 31, 7, 23, 6, 35, 13, 39, 20, 22, 3, 22, 4, 8, 12, 47, 17, 22, 24, 13, 28, 26, 16, 55, 2, 21, 21, 59, 35, 32, 47, 7, 6, 67, 12, 34, 21, 71, 10, 36, 20, 40, 75, 14, 14, 29, 15, 20, 42]

cp's OEIS Frontend

A220291 a(n) is the smallest positive integer that makes p1a(n)+1 divisible by p2, where p1p2 (p1 < p2) is the n-th odd squarefree semiprime.

Table of values

List of values

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

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

cp's OEIS Frontend

A220291 a(n) is the smallest positive integer that makes p1*a(n)+1 divisible by p2, where p1*p2 (p1 < p2) is the n-th odd squarefree semiprime.

Table of values

List of values

A220291 a(n) is the smallest positive integer that makes p1a(n)+1 divisible by p2, where p1p2 (p1 < p2) is the n-th odd squarefree semiprime.

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