A347522 - cp's OEIS frontend

A347522 The prime numbers visited on a square spiral when starting at 1 and then stepping to the smallest unvisited prime number that is not visible from the current number.

n	a(n)
1	1
2	11
3	13
4	7
5	3
6	5
7	29
8	23
9	17
10	19
11	2
12	47
13	31
14	37
15	41
16	43
17	83
18	89
19	97
20	53
21	59
22	61
23	67
24	71
25	73
26	79
27	103
28	101
29	107
30	109
31	113
32	131
33	127
34	137
35	139
36	149
37	151
38	157
39	163
40	167
41	173
42	179
43	181
44	191
45	193
46	197
47	199
48	211
49	223
50	229
51	227
52	233
53	239
54	241
55	251
56	257
57	263
58	269
59	271
60	277
61	281
62	283
63	331
64	293
65	307
66	311

[1, 11, 13, 7, 3, 5, 29, 23, 17, 19, 2, 47, 31, 37, 41, 43, 83, 89, 97, 53, 59, 61, 67, 71, 73, 79, 103, 101, 107, 109, 113, 131, 127, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 229, 227, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 331, 293, 307, 311]

cp's OEIS Frontend

A347522 The prime numbers visited on a square spiral when starting at 1 and then stepping to the smallest unvisited prime number that is not visible from the current number.

Table of values

List of values

n	a(n)
1	1
2	11
3	13
4	7
5	3
6	5
7	29
8	23
9	17
10	19
11	2
12	47
13	31
14	37
15	41
16	43
17	83
18	89
19	97
20	53
21	59
22	61
23	67
24	71
25	73
26	79
27	103
28	101
29	107
30	109
31	113
32	131
33	127
34	137
35	139
36	149
37	151
38	157
39	163
40	167
41	173
42	179
43	181
44	191
45	193
46	197
47	199
48	211
49	223
50	229
51	227
52	233
53	239
54	241
55	251
56	257
57	263
58	269
59	271
60	277
61	281
62	283
63	331
64	293
65	307
66	311

n	a(n)
1	1
2	11
3	13
4	7
5	3
6	5
7	29
8	23
9	17
10	19
11	2
12	47
13	31
14	37
15	41
16	43
17	83
18	89
19	97
20	53
21	59
22	61
23	67
24	71
25	73
26	79
27	103
28	101
29	107
30	109
31	113
32	131
33	127
34	137
35	139
36	149
37	151
38	157
39	163
40	167
41	173
42	179
43	181
44	191
45	193
46	197
47	199
48	211
49	223
50	229
51	227
52	233
53	239
54	241
55	251
56	257
57	263
58	269
59	271
60	277
61	281
62	283
63	331
64	293
65	307
66	311

n	a(n)
1	1
2	11
3	13
4	7
5	3
6	5
7	29
8	23
9	17
10	19
11	2
12	47
13	31
14	37
15	41
16	43
17	83
18	89
19	97
20	53
21	59
22	61
23	67
24	71
25	73
26	79
27	103
28	101
29	107
30	109
31	113
32	131
33	127
34	137
35	139
36	149
37	151
38	157
39	163
40	167
41	173
42	179
43	181
44	191
45	193
46	197
47	199
48	211
49	223
50	229
51	227
52	233
53	239
54	241
55	251
56	257
57	263
58	269
59	271
60	277
61	281
62	283
63	331
64	293
65	307
66	311