A110787 - cp's OEIS frontend

A110787 Least palindrome which when appended to the n-th palindrome gives a prime.

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	1
8	3
9	7
10	3
11	3
12	1
13	3
14	7
15	1
16	3
17	1
18	1
19	3
20	7
21	3
22	9
23	77
24	1
25	3
26	131
27	1
28	3
29	7
30	9
31	1
32	171
33	3
34	1
35	1
36	9
37	11
38	7
39	7
40	7
41	77
42	1
43	3
44	3
45	1
46	3
47	3
48	1
49	9
50	11
51	1
52	9
53	1
54	7
55	3
56	101
57	111
58	3
59	1
60	3
61	11
62	1
63	77
64	7
65	1
66	131
67	1
68	3
69	7
70	3
71	3
72	1
73	9
74	3
75	1
76	1
77	3
78	1
79	9
80	7
81	33
82	111
83	7
84	3
85	3
86	11
87	3
88	77
89	1
90	99
91	7
92	7
93	11
94	1
95	1

[1, 3, 1, 1, 3, 1, 1, 3, 7, 3, 3, 1, 3, 7, 1, 3, 1, 1, 3, 7, 3, 9, 77, 1, 3, 131, 1, 3, 7, 9, 1, 171, 3, 1, 1, 9, 11, 7, 7, 7, 77, 1, 3, 3, 1, 3, 3, 1, 9, 11, 1, 9, 1, 7, 3, 101, 111, 3, 1, 3, 11, 1, 77, 7, 1, 131, 1, 3, 7, 3, 3, 1, 9, 3, 1, 1, 3, 1, 9, 7, 33, 111, 7, 3, 3, 11, 3, 77, 1, 99, 7, 7, 11, 1, 1]

cp's OEIS Frontend

A110787 Least palindrome which when appended to the n-th palindrome gives a prime.

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	1
8	3
9	7
10	3
11	3
12	1
13	3
14	7
15	1
16	3
17	1
18	1
19	3
20	7
21	3
22	9
23	77
24	1
25	3
26	131
27	1
28	3
29	7
30	9
31	1
32	171
33	3
34	1
35	1
36	9
37	11
38	7
39	7
40	7
41	77
42	1
43	3
44	3
45	1
46	3
47	3
48	1
49	9
50	11
51	1
52	9
53	1
54	7
55	3
56	101
57	111
58	3
59	1
60	3
61	11
62	1
63	77
64	7
65	1
66	131
67	1
68	3
69	7
70	3
71	3
72	1
73	9
74	3
75	1
76	1
77	3
78	1
79	9
80	7
81	33
82	111
83	7
84	3
85	3
86	11
87	3
88	77
89	1
90	99
91	7
92	7
93	11
94	1
95	1

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	1
8	3
9	7
10	3
11	3
12	1
13	3
14	7
15	1
16	3
17	1
18	1
19	3
20	7
21	3
22	9
23	77
24	1
25	3
26	131
27	1
28	3
29	7
30	9
31	1
32	171
33	3
34	1
35	1
36	9
37	11
38	7
39	7
40	7
41	77
42	1
43	3
44	3
45	1
46	3
47	3
48	1
49	9
50	11
51	1
52	9
53	1
54	7
55	3
56	101
57	111
58	3
59	1
60	3
61	11
62	1
63	77
64	7
65	1
66	131
67	1
68	3
69	7
70	3
71	3
72	1
73	9
74	3
75	1
76	1
77	3
78	1
79	9
80	7
81	33
82	111
83	7
84	3
85	3
86	11
87	3
88	77
89	1
90	99
91	7
92	7
93	11
94	1
95	1

n	a(n)
1	1
2	3
3	1
4	1
5	3
6	1
7	1
8	3
9	7
10	3
11	3
12	1
13	3
14	7
15	1
16	3
17	1
18	1
19	3
20	7
21	3
22	9
23	77
24	1
25	3
26	131
27	1
28	3
29	7
30	9
31	1
32	171
33	3
34	1
35	1
36	9
37	11
38	7
39	7
40	7
41	77
42	1
43	3
44	3
45	1
46	3
47	3
48	1
49	9
50	11
51	1
52	9
53	1
54	7
55	3
56	101
57	111
58	3
59	1
60	3
61	11
62	1
63	77
64	7
65	1
66	131
67	1
68	3
69	7
70	3
71	3
72	1
73	9
74	3
75	1
76	1
77	3
78	1
79	9
80	7
81	33
82	111
83	7
84	3
85	3
86	11
87	3
88	77
89	1
90	99
91	7
92	7
93	11
94	1
95	1