A338289 - cp's OEIS frontend

A338289 Squares visited by the black knight when a white knight and a black knight are moving on a spirally numbered board, always to the lowest available unvisited square; white moves first.

n	a(n)
1	1
2	12
3	9
4	4
5	7
6	18
7	35
8	14
9	29
10	32
11	55
12	28
13	13
14	34
15	17
16	40
17	21
18	46
19	25
20	50
21	79
22	26
23	47
24	76
25	43
26	70
27	105
28	148
29	65
30	98
31	37
32	62
33	33
34	30
35	53
36	84
37	49
38	52
39	87
40	56
41	59
42	92
43	89
44	58
45	91
46	130
47	57
48	88
49	127
50	174
51	229
52	122
53	167
54	82
55	119
56	78
57	115
58	160
59	75
60	72
61	107
62	150
63	201
64	104
65	147
66	144
67	193
68	140
69	95
70	136
71	185
72	132
73	135
74	184
75	181

[1, 12, 9, 4, 7, 18, 35, 14, 29, 32, 55, 28, 13, 34, 17, 40, 21, 46, 25, 50, 79, 26, 47, 76, 43, 70, 105, 148, 65, 98, 37, 62, 33, 30, 53, 84, 49, 52, 87, 56, 59, 92, 89, 58, 91, 130, 57, 88, 127, 174, 229, 122, 167, 82, 119, 78, 115, 160, 75, 72, 107, 150, 201, 104, 147, 144, 193, 140, 95, 136, 185, 132, 135, 184, 181]

cp's OEIS Frontend

A338289 Squares visited by the black knight when a white knight and a black knight are moving on a spirally numbered board, always to the lowest available unvisited square; white moves first.

Table of values

List of values

n	a(n)
1	1
2	12
3	9
4	4
5	7
6	18
7	35
8	14
9	29
10	32
11	55
12	28
13	13
14	34
15	17
16	40
17	21
18	46
19	25
20	50
21	79
22	26
23	47
24	76
25	43
26	70
27	105
28	148
29	65
30	98
31	37
32	62
33	33
34	30
35	53
36	84
37	49
38	52
39	87
40	56
41	59
42	92
43	89
44	58
45	91
46	130
47	57
48	88
49	127
50	174
51	229
52	122
53	167
54	82
55	119
56	78
57	115
58	160
59	75
60	72
61	107
62	150
63	201
64	104
65	147
66	144
67	193
68	140
69	95
70	136
71	185
72	132
73	135
74	184
75	181

n	a(n)
1	1
2	12
3	9
4	4
5	7
6	18
7	35
8	14
9	29
10	32
11	55
12	28
13	13
14	34
15	17
16	40
17	21
18	46
19	25
20	50
21	79
22	26
23	47
24	76
25	43
26	70
27	105
28	148
29	65
30	98
31	37
32	62
33	33
34	30
35	53
36	84
37	49
38	52
39	87
40	56
41	59
42	92
43	89
44	58
45	91
46	130
47	57
48	88
49	127
50	174
51	229
52	122
53	167
54	82
55	119
56	78
57	115
58	160
59	75
60	72
61	107
62	150
63	201
64	104
65	147
66	144
67	193
68	140
69	95
70	136
71	185
72	132
73	135
74	184
75	181

n	a(n)
1	1
2	12
3	9
4	4
5	7
6	18
7	35
8	14
9	29
10	32
11	55
12	28
13	13
14	34
15	17
16	40
17	21
18	46
19	25
20	50
21	79
22	26
23	47
24	76
25	43
26	70
27	105
28	148
29	65
30	98
31	37
32	62
33	33
34	30
35	53
36	84
37	49
38	52
39	87
40	56
41	59
42	92
43	89
44	58
45	91
46	130
47	57
48	88
49	127
50	174
51	229
52	122
53	167
54	82
55	119
56	78
57	115
58	160
59	75
60	72
61	107
62	150
63	201
64	104
65	147
66	144
67	193
68	140
69	95
70	136
71	185
72	132
73	135
74	184
75	181