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A244897 as a simple table

na(n)
13
27
321
459
5163
6447
71341
83905
911271
1032357
1192607
12277821
13820177
142408409
157047447
1620576017
1759979511
18174642457
19523927371
201555935031
214604936281
2213597391065
2340088645243
24118057542207
25347369262425
261021399936433

[3,7,21,59,163,447,1341,3905,11271,32357,92607,
 277821,820177,2408409,7047447,20576017,59979511,
 174642457,523927371,1555935031,4604936281,
 13597391065,40088645243,118057542207,347369262425,
 1021399936433]