A336957 - cp's OEIS frontend

A336957 The Enots Wolley sequence: the lexicographically earliest infinite sequence {a(n)} of distinct positive numbers such that, for n>2, a(n) has a common factor with a(n-1) but not with a(n-2).

n	a(n)
1	1
2	2
3	6
4	15
5	35
6	14
7	12
8	33
9	55
10	10
11	18
12	21
13	77
14	22
15	20
16	45
17	39
18	26
19	28
20	63
21	51
22	34
23	38
24	57
25	69
26	46
27	40
28	65
29	91
30	42
31	30
32	85
33	119
34	56
35	24
36	75
37	95
38	76
39	36
40	87
41	145
42	50
43	44
44	99
45	93
46	62
47	52
48	117
49	105
50	70
51	58
52	261
53	111
54	74
55	68
56	153
57	123
58	82
59	80
60	115
61	161
62	84
63	60
64	155
65	217
66	98
67	48
68	129
69	215
70	100

[1, 2, 6, 15, 35, 14, 12, 33, 55, 10, 18, 21, 77, 22, 20, 45, 39, 26, 28, 63, 51, 34, 38, 57, 69, 46, 40, 65, 91, 42, 30, 85, 119, 56, 24, 75, 95, 76, 36, 87, 145, 50, 44, 99, 93, 62, 52, 117, 105, 70, 58, 261, 111, 74, 68, 153, 123, 82, 80, 115, 161, 84, 60, 155, 217, 98, 48, 129, 215, 100]

cp's OEIS Frontend

A336957 The Enots Wolley sequence: the lexicographically earliest infinite sequence {a(n)} of distinct positive numbers such that, for n>2, a(n) has a common factor with a(n-1) but not with a(n-2).

Table of values

List of values

n	a(n)
1	1
2	2
3	6
4	15
5	35
6	14
7	12
8	33
9	55
10	10
11	18
12	21
13	77
14	22
15	20
16	45
17	39
18	26
19	28
20	63
21	51
22	34
23	38
24	57
25	69
26	46
27	40
28	65
29	91
30	42
31	30
32	85
33	119
34	56
35	24
36	75
37	95
38	76
39	36
40	87
41	145
42	50
43	44
44	99
45	93
46	62
47	52
48	117
49	105
50	70
51	58
52	261
53	111
54	74
55	68
56	153
57	123
58	82
59	80
60	115
61	161
62	84
63	60
64	155
65	217
66	98
67	48
68	129
69	215
70	100

n	a(n)
1	1
2	2
3	6
4	15
5	35
6	14
7	12
8	33
9	55
10	10
11	18
12	21
13	77
14	22
15	20
16	45
17	39
18	26
19	28
20	63
21	51
22	34
23	38
24	57
25	69
26	46
27	40
28	65
29	91
30	42
31	30
32	85
33	119
34	56
35	24
36	75
37	95
38	76
39	36
40	87
41	145
42	50
43	44
44	99
45	93
46	62
47	52
48	117
49	105
50	70
51	58
52	261
53	111
54	74
55	68
56	153
57	123
58	82
59	80
60	115
61	161
62	84
63	60
64	155
65	217
66	98
67	48
68	129
69	215
70	100

n	a(n)
1	1
2	2
3	6
4	15
5	35
6	14
7	12
8	33
9	55
10	10
11	18
12	21
13	77
14	22
15	20
16	45
17	39
18	26
19	28
20	63
21	51
22	34
23	38
24	57
25	69
26	46
27	40
28	65
29	91
30	42
31	30
32	85
33	119
34	56
35	24
36	75
37	95
38	76
39	36
40	87
41	145
42	50
43	44
44	99
45	93
46	62
47	52
48	117
49	105
50	70
51	58
52	261
53	111
54	74
55	68
56	153
57	123
58	82
59	80
60	115
61	161
62	84
63	60
64	155
65	217
66	98
67	48
68	129
69	215
70	100