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A074252 as a simple table

na(n)
01
14
212
330
484
59150
647244
775360
8177287
9281868
10705790
113043504
129669715
1320139930
1432043111
1567447484
16291217662
177544909388
188396469108
1921425170627

[1,4,12,30,84,9150,47244,75360,177287,281868,
 705790,3043504,9669715,20139930,32043111,67447484,
 291217662,7544909388,8396469108,21425170627]