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A159227 as a simple table

na(n)
27
322
445
5103
6193
7421
8777
91681
103097
116697
1212345
1326713
1449273
15106681
16196857
17426361
18786937
191704697
203146745
216817273
2212584953
2327266041
2450335737
25109058041
26201334777
27436219897

[7,22,45,103,193,421,777,1681,3097,6697,12345,
 26713,49273,106681,196857,426361,786937,1704697,
 3146745,6817273,12584953,27266041,50335737,
 109058041,201334777,436219897]