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A240478 as a simple table

na(n)
12
28
325
481
5264
6857
72785
89050
929407
1095557
11310508
121008981
133278637
1410653778
1534618955
16112492681
17365539724
181187804297
193859714705
2012541963050
2140754524407
22132429927677
23430324878028
241398320635661
254543777736197

[2,8,25,81,264,857,2785,9050,29407,95557,310508,
 1008981,3278637,10653778,34618955,112492681,
 365539724,1187804297,3859714705,12541963050,
 40754524407,132429927677,430324878028,
 1398320635661,4543777736197]