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A242195 as a simple table

na(n)
11
22
31
417
531
6691
743
8257
973
1041
1189
12103
132731
14113
15151
1637
1743691
18109
19174763
2061681
21337
2259
23178481
2497
25251
26157
2739409
28113161
2967
301321
31266689
32641
33839
34101
35281
36433
37223
38229
39121369
40631

[1,2,1,17,31,691,43,257,73,41,89,103,2731,113,151,
 37,43691,109,174763,61681,337,59,178481,97,251,
 157,39409,113161,67,1321,266689,641,839,101,281,
 433,223,229,121369,631]