A328909 - cp's OEIS frontend

A328909 Knight's tour on spirally numbered infinite board, when the knight always jumps on the unvisited square closest to the origin, first according to the sup-norm, then 2-norm, then number of the square: a(n) = number of square visited at move n.

n	a(n)
0	0
1	9
2	2
3	5
4	8
5	3
6	6
7	1
8	4
9	7
10	10
11	13
12	28
13	31
14	14
15	11
16	26
17	23
18	44
19	19
20	22
21	43
22	40
23	17
24	34
25	37
26	18
27	15
28	32
29	29
30	52
31	25
32	46
33	21
34	42
35	69
36	20
37	39
38	16
39	33
40	12
41	27
42	24
43	45
44	74
45	41
46	68
47	103
48	38
49	35
50	60
51	93
52	30
53	53
54	84
55	49
56	78
57	115
58	160
59	75
60	116
61	47
62	76
63	113
64	72
65	107
66	150
67	67
68	36
69	61
70	94
71	57
72	54
73	85
74	50
75	79
76	82

[0, 9, 2, 5, 8, 3, 6, 1, 4, 7, 10, 13, 28, 31, 14, 11, 26, 23, 44, 19, 22, 43, 40, 17, 34, 37, 18, 15, 32, 29, 52, 25, 46, 21, 42, 69, 20, 39, 16, 33, 12, 27, 24, 45, 74, 41, 68, 103, 38, 35, 60, 93, 30, 53, 84, 49, 78, 115, 160, 75, 116, 47, 76, 113, 72, 107, 150, 67, 36, 61, 94, 57, 54, 85, 50, 79, 82]

cp's OEIS Frontend

A328909 Knight's tour on spirally numbered infinite board, when the knight always jumps on the unvisited square closest to the origin, first according to the sup-norm, then 2-norm, then number of the square: a(n) = number of square visited at move n.

Table of values

List of values

n	a(n)
0	0
1	9
2	2
3	5
4	8
5	3
6	6
7	1
8	4
9	7
10	10
11	13
12	28
13	31
14	14
15	11
16	26
17	23
18	44
19	19
20	22
21	43
22	40
23	17
24	34
25	37
26	18
27	15
28	32
29	29
30	52
31	25
32	46
33	21
34	42
35	69
36	20
37	39
38	16
39	33
40	12
41	27
42	24
43	45
44	74
45	41
46	68
47	103
48	38
49	35
50	60
51	93
52	30
53	53
54	84
55	49
56	78
57	115
58	160
59	75
60	116
61	47
62	76
63	113
64	72
65	107
66	150
67	67
68	36
69	61
70	94
71	57
72	54
73	85
74	50
75	79
76	82

n	a(n)
0	0
1	9
2	2
3	5
4	8
5	3
6	6
7	1
8	4
9	7
10	10
11	13
12	28
13	31
14	14
15	11
16	26
17	23
18	44
19	19
20	22
21	43
22	40
23	17
24	34
25	37
26	18
27	15
28	32
29	29
30	52
31	25
32	46
33	21
34	42
35	69
36	20
37	39
38	16
39	33
40	12
41	27
42	24
43	45
44	74
45	41
46	68
47	103
48	38
49	35
50	60
51	93
52	30
53	53
54	84
55	49
56	78
57	115
58	160
59	75
60	116
61	47
62	76
63	113
64	72
65	107
66	150
67	67
68	36
69	61
70	94
71	57
72	54
73	85
74	50
75	79
76	82

n	a(n)
0	0
1	9
2	2
3	5
4	8
5	3
6	6
7	1
8	4
9	7
10	10
11	13
12	28
13	31
14	14
15	11
16	26
17	23
18	44
19	19
20	22
21	43
22	40
23	17
24	34
25	37
26	18
27	15
28	32
29	29
30	52
31	25
32	46
33	21
34	42
35	69
36	20
37	39
38	16
39	33
40	12
41	27
42	24
43	45
44	74
45	41
46	68
47	103
48	38
49	35
50	60
51	93
52	30
53	53
54	84
55	49
56	78
57	115
58	160
59	75
60	116
61	47
62	76
63	113
64	72
65	107
66	150
67	67
68	36
69	61
70	94
71	57
72	54
73	85
74	50
75	79
76	82