A335856 - cp's OEIS frontend

A335856 Squares visited by a chess king on a spirally numbered infinite board where the king moves to the adjacent unvisited square containing the lowest prime number. If no such square is available it chooses the lowest-numbered adjacent unvisited square.

n	a(n)
1	1
2	2
3	3
4	11
5	29
6	13
7	31
8	59
9	32
10	14
11	4
12	5
13	17
14	37
15	67
16	103
17	149
18	104
19	66
20	38
21	18
22	19
23	7
24	23
25	47
26	79
27	48
28	24
29	8
30	6
31	20
32	41
33	71
34	43
35	73
36	109
37	72
38	42
39	21
40	22
41	44
42	45
43	46
44	76
45	75
46	113
47	74
48	112
49	110
50	111
51	157
52	211
53	271
54	209
55	269
56	337
57	267
58	205
59	151
60	107
61	69
62	39
63	40
64	68
65	105
66	106
67	70
68	108

[1, 2, 3, 11, 29, 13, 31, 59, 32, 14, 4, 5, 17, 37, 67, 103, 149, 104, 66, 38, 18, 19, 7, 23, 47, 79, 48, 24, 8, 6, 20, 41, 71, 43, 73, 109, 72, 42, 21, 22, 44, 45, 46, 76, 75, 113, 74, 112, 110, 111, 157, 211, 271, 209, 269, 337, 267, 205, 151, 107, 69, 39, 40, 68, 105, 106, 70, 108]

cp's OEIS Frontend

A335856 Squares visited by a chess king on a spirally numbered infinite board where the king moves to the adjacent unvisited square containing the lowest prime number. If no such square is available it chooses the lowest-numbered adjacent unvisited square.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	11
5	29
6	13
7	31
8	59
9	32
10	14
11	4
12	5
13	17
14	37
15	67
16	103
17	149
18	104
19	66
20	38
21	18
22	19
23	7
24	23
25	47
26	79
27	48
28	24
29	8
30	6
31	20
32	41
33	71
34	43
35	73
36	109
37	72
38	42
39	21
40	22
41	44
42	45
43	46
44	76
45	75
46	113
47	74
48	112
49	110
50	111
51	157
52	211
53	271
54	209
55	269
56	337
57	267
58	205
59	151
60	107
61	69
62	39
63	40
64	68
65	105
66	106
67	70
68	108

n	a(n)
1	1
2	2
3	3
4	11
5	29
6	13
7	31
8	59
9	32
10	14
11	4
12	5
13	17
14	37
15	67
16	103
17	149
18	104
19	66
20	38
21	18
22	19
23	7
24	23
25	47
26	79
27	48
28	24
29	8
30	6
31	20
32	41
33	71
34	43
35	73
36	109
37	72
38	42
39	21
40	22
41	44
42	45
43	46
44	76
45	75
46	113
47	74
48	112
49	110
50	111
51	157
52	211
53	271
54	209
55	269
56	337
57	267
58	205
59	151
60	107
61	69
62	39
63	40
64	68
65	105
66	106
67	70
68	108

n	a(n)
1	1
2	2
3	3
4	11
5	29
6	13
7	31
8	59
9	32
10	14
11	4
12	5
13	17
14	37
15	67
16	103
17	149
18	104
19	66
20	38
21	18
22	19
23	7
24	23
25	47
26	79
27	48
28	24
29	8
30	6
31	20
32	41
33	71
34	43
35	73
36	109
37	72
38	42
39	21
40	22
41	44
42	45
43	46
44	76
45	75
46	113
47	74
48	112
49	110
50	111
51	157
52	211
53	271
54	209
55	269
56	337
57	267
58	205
59	151
60	107
61	69
62	39
63	40
64	68
65	105
66	106
67	70
68	108