A240453 - cp's OEIS frontend

A240453 Greatest prime divisors of the palindromes with an even number of digits.

n	a(n)
1	11
2	11
3	11
4	11
5	11
6	11
7	11
8	11
9	11
10	13
11	101
12	37
13	11
14	131
15	47
16	151
17	23
18	19
19	181
20	13
21	11
22	101
23	53
24	37
25	29
26	11
27	11
28	131
29	17
30	13
31	283
32	293
33	101
34	313
35	19
36	37
37	11
38	353
39	11
40	13
41	17
42	11
43	197
44	101
45	23
46	53
47	31
48	37
49	227
50	13
51	31
52	19
53	97
54	11
55	101
56	103
57	11
58	107
59	109
60	13

[11, 11, 11, 11, 11, 11, 11, 11, 11, 13, 101, 37, 11, 131, 47, 151, 23, 19, 181, 13, 11, 101, 53, 37, 29, 11, 11, 131, 17, 13, 283, 293, 101, 313, 19, 37, 11, 353, 11, 13, 17, 11, 197, 101, 23, 53, 31, 37, 227, 13, 31, 19, 97, 11, 101, 103, 11, 107, 109, 13]

cp's OEIS Frontend

A240453 Greatest prime divisors of the palindromes with an even number of digits.

Table of values

List of values

n	a(n)
1	11
2	11
3	11
4	11
5	11
6	11
7	11
8	11
9	11
10	13
11	101
12	37
13	11
14	131
15	47
16	151
17	23
18	19
19	181
20	13
21	11
22	101
23	53
24	37
25	29
26	11
27	11
28	131
29	17
30	13
31	283
32	293
33	101
34	313
35	19
36	37
37	11
38	353
39	11
40	13
41	17
42	11
43	197
44	101
45	23
46	53
47	31
48	37
49	227
50	13
51	31
52	19
53	97
54	11
55	101
56	103
57	11
58	107
59	109
60	13

n	a(n)
1	11
2	11
3	11
4	11
5	11
6	11
7	11
8	11
9	11
10	13
11	101
12	37
13	11
14	131
15	47
16	151
17	23
18	19
19	181
20	13
21	11
22	101
23	53
24	37
25	29
26	11
27	11
28	131
29	17
30	13
31	283
32	293
33	101
34	313
35	19
36	37
37	11
38	353
39	11
40	13
41	17
42	11
43	197
44	101
45	23
46	53
47	31
48	37
49	227
50	13
51	31
52	19
53	97
54	11
55	101
56	103
57	11
58	107
59	109
60	13

n	a(n)
1	11
2	11
3	11
4	11
5	11
6	11
7	11
8	11
9	11
10	13
11	101
12	37
13	11
14	131
15	47
16	151
17	23
18	19
19	181
20	13
21	11
22	101
23	53
24	37
25	29
26	11
27	11
28	131
29	17
30	13
31	283
32	293
33	101
34	313
35	19
36	37
37	11
38	353
39	11
40	13
41	17
42	11
43	197
44	101
45	23
46	53
47	31
48	37
49	227
50	13
51	31
52	19
53	97
54	11
55	101
56	103
57	11
58	107
59	109
60	13