A334619 - cp's OEIS frontend

A334619 Squares visited on a board numbered in counterclockwise square spiral by successively turning to the left square if it is unvisited or to the right square otherwise.

n	a(n)
1	1
2	2
3	3
4	4
5	15
6	16
7	5
8	18
9	19
10	6
11	7
12	8
13	23
14	24
15	9
16	10
17	11
18	28
19	29
20	12
21	13
22	14
23	33
24	34
25	61
26	62
27	35
28	36
29	17
30	38
31	39
32	68
33	69
34	40
35	41
36	20
37	21
38	22
39	45
40	46
41	77
42	78
43	47
44	48
45	25
46	26
47	27
48	52
49	53
50	86
51	87
52	54
53	55
54	30
55	31
56	32
57	59
58	60
59	95
60	96
61	139
62	140
63	97
64	98
65	63
66	64
67	37

[1, 2, 3, 4, 15, 16, 5, 18, 19, 6, 7, 8, 23, 24, 9, 10, 11, 28, 29, 12, 13, 14, 33, 34, 61, 62, 35, 36, 17, 38, 39, 68, 69, 40, 41, 20, 21, 22, 45, 46, 77, 78, 47, 48, 25, 26, 27, 52, 53, 86, 87, 54, 55, 30, 31, 32, 59, 60, 95, 96, 139, 140, 97, 98, 63, 64, 37]

cp's OEIS Frontend

A334619 Squares visited on a board numbered in counterclockwise square spiral by successively turning to the left square if it is unvisited or to the right square otherwise.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	15
6	16
7	5
8	18
9	19
10	6
11	7
12	8
13	23
14	24
15	9
16	10
17	11
18	28
19	29
20	12
21	13
22	14
23	33
24	34
25	61
26	62
27	35
28	36
29	17
30	38
31	39
32	68
33	69
34	40
35	41
36	20
37	21
38	22
39	45
40	46
41	77
42	78
43	47
44	48
45	25
46	26
47	27
48	52
49	53
50	86
51	87
52	54
53	55
54	30
55	31
56	32
57	59
58	60
59	95
60	96
61	139
62	140
63	97
64	98
65	63
66	64
67	37

n	a(n)
1	1
2	2
3	3
4	4
5	15
6	16
7	5
8	18
9	19
10	6
11	7
12	8
13	23
14	24
15	9
16	10
17	11
18	28
19	29
20	12
21	13
22	14
23	33
24	34
25	61
26	62
27	35
28	36
29	17
30	38
31	39
32	68
33	69
34	40
35	41
36	20
37	21
38	22
39	45
40	46
41	77
42	78
43	47
44	48
45	25
46	26
47	27
48	52
49	53
50	86
51	87
52	54
53	55
54	30
55	31
56	32
57	59
58	60
59	95
60	96
61	139
62	140
63	97
64	98
65	63
66	64
67	37

n	a(n)
1	1
2	2
3	3
4	4
5	15
6	16
7	5
8	18
9	19
10	6
11	7
12	8
13	23
14	24
15	9
16	10
17	11
18	28
19	29
20	12
21	13
22	14
23	33
24	34
25	61
26	62
27	35
28	36
29	17
30	38
31	39
32	68
33	69
34	40
35	41
36	20
37	21
38	22
39	45
40	46
41	77
42	78
43	47
44	48
45	25
46	26
47	27
48	52
49	53
50	86
51	87
52	54
53	55
54	30
55	31
56	32
57	59
58	60
59	95
60	96
61	139
62	140
63	97
64	98
65	63
66	64
67	37