A382091 - cp's OEIS frontend

A382091 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest unused positive number such that a(n) shares a factor with a(n-1) while the total number of prime terms of the form 4k + 1 is never less than those of the form 4k + 3.

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	5
8	15
9	3
10	9
11	12
12	14
13	16
14	18
15	20
16	22
17	24
18	21
19	27
20	30
21	25
22	35
23	28
24	26
25	13
26	39
27	33
28	11
29	44
30	32
31	34
32	17
33	51
34	36
35	38
36	19
37	57
38	42
39	40
40	45
41	48
42	46
43	50
44	52
45	54
46	56
47	49
48	63
49	60
50	55
51	65
52	70
53	58
54	29
55	87
56	66
57	62
58	31
59	93
60	69
61	72
62	64
63	68
64	74
65	37
66	111

[1, 2, 4, 6, 8, 10, 5, 15, 3, 9, 12, 14, 16, 18, 20, 22, 24, 21, 27, 30, 25, 35, 28, 26, 13, 39, 33, 11, 44, 32, 34, 17, 51, 36, 38, 19, 57, 42, 40, 45, 48, 46, 50, 52, 54, 56, 49, 63, 60, 55, 65, 70, 58, 29, 87, 66, 62, 31, 93, 69, 72, 64, 68, 74, 37, 111]

cp's OEIS Frontend

A382091 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest unused positive number such that a(n) shares a factor with a(n-1) while the total number of prime terms of the form 4k + 1 is never less than those of the form 4k + 3.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	5
8	15
9	3
10	9
11	12
12	14
13	16
14	18
15	20
16	22
17	24
18	21
19	27
20	30
21	25
22	35
23	28
24	26
25	13
26	39
27	33
28	11
29	44
30	32
31	34
32	17
33	51
34	36
35	38
36	19
37	57
38	42
39	40
40	45
41	48
42	46
43	50
44	52
45	54
46	56
47	49
48	63
49	60
50	55
51	65
52	70
53	58
54	29
55	87
56	66
57	62
58	31
59	93
60	69
61	72
62	64
63	68
64	74
65	37
66	111

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	5
8	15
9	3
10	9
11	12
12	14
13	16
14	18
15	20
16	22
17	24
18	21
19	27
20	30
21	25
22	35
23	28
24	26
25	13
26	39
27	33
28	11
29	44
30	32
31	34
32	17
33	51
34	36
35	38
36	19
37	57
38	42
39	40
40	45
41	48
42	46
43	50
44	52
45	54
46	56
47	49
48	63
49	60
50	55
51	65
52	70
53	58
54	29
55	87
56	66
57	62
58	31
59	93
60	69
61	72
62	64
63	68
64	74
65	37
66	111

cp's OEIS Frontend

A382091 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest unused positive number such that a(n) shares a factor with a(n-1) while the total number of prime terms of the form 4*k + 1 is never less than those of the form 4*k + 3.

Table of values

List of values

A382091 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest unused positive number such that a(n) shares a factor with a(n-1) while the total number of prime terms of the form 4k + 1 is never less than those of the form 4k + 3.

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	5
8	15
9	3
10	9
11	12
12	14
13	16
14	18
15	20
16	22
17	24
18	21
19	27
20	30
21	25
22	35
23	28
24	26
25	13
26	39
27	33
28	11
29	44
30	32
31	34
32	17
33	51
34	36
35	38
36	19
37	57
38	42
39	40
40	45
41	48
42	46
43	50
44	52
45	54
46	56
47	49
48	63
49	60
50	55
51	65
52	70
53	58
54	29
55	87
56	66
57	62
58	31
59	93
60	69
61	72
62	64
63	68
64	74
65	37
66	111