A262463 - cp's OEIS frontend

A262463 If n is prime a(n) = n else a(n) = nextprime(reverse(n)), where "next prime" is the smallest prime >= n, see A007918.

n	a(n)
1	2
2	2
3	3
4	5
5	5
6	7
7	7
8	11
9	11
10	2
11	11
12	23
13	13
14	41
15	53
16	61
17	17
18	83
19	19
20	2
21	13
22	23
23	23
24	43
25	53
26	67
27	73
28	83
29	29
30	3
31	31
32	23
33	37
34	43
35	53
36	67
37	37
38	83
39	97
40	5
41	41
42	29
43	43
44	47
45	59
46	67
47	47
48	89
49	97
50	5
51	17
52	29
53	53
54	47
55	59
56	67
57	79
58	89
59	59
60	7
61	61
62	29
63	37
64	47
65	59
66	67
67	67
68	89
69	97
70	7
71	71
72	29
73	73
74	47
75	59
76	67
77	79
78	89
79	79
80	11
81	19
82	29

[2, 2, 3, 5, 5, 7, 7, 11, 11, 2, 11, 23, 13, 41, 53, 61, 17, 83, 19, 2, 13, 23, 23, 43, 53, 67, 73, 83, 29, 3, 31, 23, 37, 43, 53, 67, 37, 83, 97, 5, 41, 29, 43, 47, 59, 67, 47, 89, 97, 5, 17, 29, 53, 47, 59, 67, 79, 89, 59, 7, 61, 29, 37, 47, 59, 67, 67, 89, 97, 7, 71, 29, 73, 47, 59, 67, 79, 89, 79, 11, 19, 29]

cp's OEIS Frontend

A262463 If n is prime a(n) = n else a(n) = nextprime(reverse(n)), where "next prime" is the smallest prime >= n, see A007918.

Table of values

List of values

n	a(n)
1	2
2	2
3	3
4	5
5	5
6	7
7	7
8	11
9	11
10	2
11	11
12	23
13	13
14	41
15	53
16	61
17	17
18	83
19	19
20	2
21	13
22	23
23	23
24	43
25	53
26	67
27	73
28	83
29	29
30	3
31	31
32	23
33	37
34	43
35	53
36	67
37	37
38	83
39	97
40	5
41	41
42	29
43	43
44	47
45	59
46	67
47	47
48	89
49	97
50	5
51	17
52	29
53	53
54	47
55	59
56	67
57	79
58	89
59	59
60	7
61	61
62	29
63	37
64	47
65	59
66	67
67	67
68	89
69	97
70	7
71	71
72	29
73	73
74	47
75	59
76	67
77	79
78	89
79	79
80	11
81	19
82	29

n	a(n)
1	2
2	2
3	3
4	5
5	5
6	7
7	7
8	11
9	11
10	2
11	11
12	23
13	13
14	41
15	53
16	61
17	17
18	83
19	19
20	2
21	13
22	23
23	23
24	43
25	53
26	67
27	73
28	83
29	29
30	3
31	31
32	23
33	37
34	43
35	53
36	67
37	37
38	83
39	97
40	5
41	41
42	29
43	43
44	47
45	59
46	67
47	47
48	89
49	97
50	5
51	17
52	29
53	53
54	47
55	59
56	67
57	79
58	89
59	59
60	7
61	61
62	29
63	37
64	47
65	59
66	67
67	67
68	89
69	97
70	7
71	71
72	29
73	73
74	47
75	59
76	67
77	79
78	89
79	79
80	11
81	19
82	29

n	a(n)
1	2
2	2
3	3
4	5
5	5
6	7
7	7
8	11
9	11
10	2
11	11
12	23
13	13
14	41
15	53
16	61
17	17
18	83
19	19
20	2
21	13
22	23
23	23
24	43
25	53
26	67
27	73
28	83
29	29
30	3
31	31
32	23
33	37
34	43
35	53
36	67
37	37
38	83
39	97
40	5
41	41
42	29
43	43
44	47
45	59
46	67
47	47
48	89
49	97
50	5
51	17
52	29
53	53
54	47
55	59
56	67
57	79
58	89
59	59
60	7
61	61
62	29
63	37
64	47
65	59
66	67
67	67
68	89
69	97
70	7
71	71
72	29
73	73
74	47
75	59
76	67
77	79
78	89
79	79
80	11
81	19
82	29