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A117521 as a simple table

na(n)
11
23
35
47
59
611
713
833
935
1055
1157
1277
1379
1499
15101
16103
17303
18305
19505
20507
21707
22709
23909
24911
25121
26123
27323
28325
29525
30527
31727
32729
33929
34931
35141
36143
37343
38345
39545
40547
41747
42749
43949
44951
45161
46163
47363
48365
49565
50567
51767
52769
53969
54971
55181
56183
57383
58385
59585
60587
61787
62789
63989
64991
65201
66104
67403
68306
69605
70508
71807
72710
7319
7493
7541
7616
7763
7838
7985
8060
818
8210
833
845
857
869
8711
8813
8933
9035
9155
9257
9377
9479
9599
96101
97103
98303
99305
100505
101507
102707

[1,3,5,7,9,11,13,33,35,55,57,77,79,99,101,103,303,
 305,505,507,707,709,909,911,121,123,323,325,525,
 527,727,729,929,931,141,143,343,345,545,547,747,
 749,949,951,161,163,363,365,565,567,767,769,969,
 971,181,183,383,385,585,587,787,789,989,991,201,
 104,403,306,605,508,807,710,19,93,41,16,63,38,85,
 60,8,10,3,5,7,9,11,13,33,35,55,57,77,79,99,101,
 103,303,305,505,507,707]