A348022 - cp's OEIS frontend

A348022 The numbers visited on a square spiral when stepping to the smallest unvisited number that is visible from and shares a divisor > 1 with the current number. Start with 1 and 2.

n	a(n)
1	1
2	2
3	4
4	6
5	3
6	12
7	9
8	15
9	5
10	10
11	14
12	7
13	21
14	27
15	18
16	16
17	8
18	22
19	11
20	33
21	30
22	20
23	24
24	32
25	26
26	13
27	39
28	36
29	28
30	35
31	25
32	40
33	44
34	38
35	19
36	76
37	34
38	17
39	68
40	42
41	45
42	51
43	48
44	57
45	66
46	55
47	60
48	46
49	23
50	92
51	58
52	50
53	62
54	31
55	155
56	70
57	49
58	56
59	63
60	72
61	64
62	52
63	65
64	78
65	54
66	69
67	84
68	75
69	85
70	80
71	94
72	47
73	188

[1, 2, 4, 6, 3, 12, 9, 15, 5, 10, 14, 7, 21, 27, 18, 16, 8, 22, 11, 33, 30, 20, 24, 32, 26, 13, 39, 36, 28, 35, 25, 40, 44, 38, 19, 76, 34, 17, 68, 42, 45, 51, 48, 57, 66, 55, 60, 46, 23, 92, 58, 50, 62, 31, 155, 70, 49, 56, 63, 72, 64, 52, 65, 78, 54, 69, 84, 75, 85, 80, 94, 47, 188]

cp's OEIS Frontend

A348022 The numbers visited on a square spiral when stepping to the smallest unvisited number that is visible from and shares a divisor > 1 with the current number. Start with 1 and 2.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	3
6	12
7	9
8	15
9	5
10	10
11	14
12	7
13	21
14	27
15	18
16	16
17	8
18	22
19	11
20	33
21	30
22	20
23	24
24	32
25	26
26	13
27	39
28	36
29	28
30	35
31	25
32	40
33	44
34	38
35	19
36	76
37	34
38	17
39	68
40	42
41	45
42	51
43	48
44	57
45	66
46	55
47	60
48	46
49	23
50	92
51	58
52	50
53	62
54	31
55	155
56	70
57	49
58	56
59	63
60	72
61	64
62	52
63	65
64	78
65	54
66	69
67	84
68	75
69	85
70	80
71	94
72	47
73	188

n	a(n)
1	1
2	2
3	4
4	6
5	3
6	12
7	9
8	15
9	5
10	10
11	14
12	7
13	21
14	27
15	18
16	16
17	8
18	22
19	11
20	33
21	30
22	20
23	24
24	32
25	26
26	13
27	39
28	36
29	28
30	35
31	25
32	40
33	44
34	38
35	19
36	76
37	34
38	17
39	68
40	42
41	45
42	51
43	48
44	57
45	66
46	55
47	60
48	46
49	23
50	92
51	58
52	50
53	62
54	31
55	155
56	70
57	49
58	56
59	63
60	72
61	64
62	52
63	65
64	78
65	54
66	69
67	84
68	75
69	85
70	80
71	94
72	47
73	188

n	a(n)
1	1
2	2
3	4
4	6
5	3
6	12
7	9
8	15
9	5
10	10
11	14
12	7
13	21
14	27
15	18
16	16
17	8
18	22
19	11
20	33
21	30
22	20
23	24
24	32
25	26
26	13
27	39
28	36
29	28
30	35
31	25
32	40
33	44
34	38
35	19
36	76
37	34
38	17
39	68
40	42
41	45
42	51
43	48
44	57
45	66
46	55
47	60
48	46
49	23
50	92
51	58
52	50
53	62
54	31
55	155
56	70
57	49
58	56
59	63
60	72
61	64
62	52
63	65
64	78
65	54
66	69
67	84
68	75
69	85
70	80
71	94
72	47
73	188