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A230820 Table, read by antidiagonals, of palindromic primes in base b expressed in decimal.

Table of values

n a(n)
1 3
2 2
3 5
4 2
5 13
6 7
7 2
8 3
9 23
10 17
11 2
12 3
13 5
14 151
15 31
16 2
17 3
18 31
19 17
20 173
21 73
22 2
23 3
24 5
25 41
26 29
27 233
28 107
29 2
30 3
31 5
32 7
33 67
34 59
35 757
36 127
37 2
38 3
39 5
40 71
41 37
42 83
43 257
44 937
45 257
46 2
47 3
48 5
49 7
50 107
51 43
52 109
53 373
54 1093
55 313
56 2
57 3
58 5
59 7
60 73
61 157
62 61
63 701
64 409
65 1249
66 443

List of values

[3, 2, 5, 2, 13, 7, 2, 3, 23, 17, 2, 3, 5, 151, 31, 2, 3, 31, 17, 173, 73, 2, 3, 5, 41, 29, 233, 107, 2, 3, 5, 7, 67, 59, 757, 127, 2, 3, 5, 71, 37, 83, 257, 937, 257, 2, 3, 5, 7, 107, 43, 109, 373, 1093, 313, 2, 3, 5, 7, 73, 157, 61, 701, 409, 1249, 443]