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A282913 as a simple table

na(n)
01
13
27
313
425
559
6123
7219
8411
9955
101979
113515
126587
1315291
1431675
1556251
16105403
17244667
18506811
19900027
201686459
213914683
228108987
2314400443
2426983355
2562634939
26129743803
27230407099
28431733691
291002159035
302075900859
313686513595
326907739067

[1,3,7,13,25,59,123,219,411,955,1979,3515,6587,
 15291,31675,56251,105403,244667,506811,900027,
 1686459,3914683,8108987,14400443,26983355,
 62634939,129743803,230407099,431733691,1002159035,
 2075900859,3686513595,6907739067]