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A224140 as a simple table

na(n)
12
29
349
4272
51509
68375
746586
8259927
91454873
108167578
1145975525
12259412481
131466771294
148308711329
1547142516717
16267868554552
171524033271457
188681096155047
1949500982033342
20282533898125471
211614019099745197

[2,9,49,272,1509,8375,46586,259927,1454873,
 8167578,45975525,259412481,1466771294,8308711329,
 47142516717,267868554552,1524033271457,
 8681096155047,49500982033342,282533898125471,
 1614019099745197]