A377078 - cp's OEIS frontend

A377078 Lexicographically earliest infinite sequence of distinct positive integers such that, for n > 2, a(n) shares a factor with a(n-2) mod a(n-1).

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	9
7	10
8	12
9	5
10	14
11	15
12	16
13	18
14	20
15	21
16	22
17	24
18	11
19	26
20	33
21	13
22	7
23	27
24	28
25	30
26	32
27	25
28	35
29	40
30	42
31	34
32	36
33	17
34	38
35	51
36	19
37	39
38	57
39	45
40	46
41	48
42	23
43	44
44	69
45	50
46	76
47	52
48	54
49	56
50	58
51	49
52	60
53	63
54	55
55	62
56	65
57	31
58	66
59	93
60	64
61	29
62	68
63	87
64	70
65	85
66	72
67	78
68	74
69	80
70	37
71	75
72	111
73	81
74	82
75	84
76	41
77	86
78	123
79	43
80	148
81	129
82	95
83	88
84	77
85	99
86	91
87	92
88	98
89	90
90	94

[2, 3, 4, 6, 8, 9, 10, 12, 5, 14, 15, 16, 18, 20, 21, 22, 24, 11, 26, 33, 13, 7, 27, 28, 30, 32, 25, 35, 40, 42, 34, 36, 17, 38, 51, 19, 39, 57, 45, 46, 48, 23, 44, 69, 50, 76, 52, 54, 56, 58, 49, 60, 63, 55, 62, 65, 31, 66, 93, 64, 29, 68, 87, 70, 85, 72, 78, 74, 80, 37, 75, 111, 81, 82, 84, 41, 86, 123, 43, 148, 129, 95, 88, 77, 99, 91, 92, 98, 90, 94]

cp's OEIS Frontend

A377078 Lexicographically earliest infinite sequence of distinct positive integers such that, for n > 2, a(n) shares a factor with a(n-2) mod a(n-1).

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	9
7	10
8	12
9	5
10	14
11	15
12	16
13	18
14	20
15	21
16	22
17	24
18	11
19	26
20	33
21	13
22	7
23	27
24	28
25	30
26	32
27	25
28	35
29	40
30	42
31	34
32	36
33	17
34	38
35	51
36	19
37	39
38	57
39	45
40	46
41	48
42	23
43	44
44	69
45	50
46	76
47	52
48	54
49	56
50	58
51	49
52	60
53	63
54	55
55	62
56	65
57	31
58	66
59	93
60	64
61	29
62	68
63	87
64	70
65	85
66	72
67	78
68	74
69	80
70	37
71	75
72	111
73	81
74	82
75	84
76	41
77	86
78	123
79	43
80	148
81	129
82	95
83	88
84	77
85	99
86	91
87	92
88	98
89	90
90	94

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	9
7	10
8	12
9	5
10	14
11	15
12	16
13	18
14	20
15	21
16	22
17	24
18	11
19	26
20	33
21	13
22	7
23	27
24	28
25	30
26	32
27	25
28	35
29	40
30	42
31	34
32	36
33	17
34	38
35	51
36	19
37	39
38	57
39	45
40	46
41	48
42	23
43	44
44	69
45	50
46	76
47	52
48	54
49	56
50	58
51	49
52	60
53	63
54	55
55	62
56	65
57	31
58	66
59	93
60	64
61	29
62	68
63	87
64	70
65	85
66	72
67	78
68	74
69	80
70	37
71	75
72	111
73	81
74	82
75	84
76	41
77	86
78	123
79	43
80	148
81	129
82	95
83	88
84	77
85	99
86	91
87	92
88	98
89	90
90	94

n	a(n)
1	2
2	3
3	4
4	6
5	8
6	9
7	10
8	12
9	5
10	14
11	15
12	16
13	18
14	20
15	21
16	22
17	24
18	11
19	26
20	33
21	13
22	7
23	27
24	28
25	30
26	32
27	25
28	35
29	40
30	42
31	34
32	36
33	17
34	38
35	51
36	19
37	39
38	57
39	45
40	46
41	48
42	23
43	44
44	69
45	50
46	76
47	52
48	54
49	56
50	58
51	49
52	60
53	63
54	55
55	62
56	65
57	31
58	66
59	93
60	64
61	29
62	68
63	87
64	70
65	85
66	72
67	78
68	74
69	80
70	37
71	75
72	111
73	81
74	82
75	84
76	41
77	86
78	123
79	43
80	148
81	129
82	95
83	88
84	77
85	99
86	91
87	92
88	98
89	90
90	94