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A099280 as a simple table

na(n)
01
12
24
38
477
5232
6555
72992
815751
941314
1092529
111049401
123097903
137193917
1463855836
15227696722
16555373555
173107337013
1816214541261
1942428982424
2094857775849
211097153517901
223194305034913
237388609068837
2467772177127776

[1,2,4,8,77,232,555,2992,15751,41314,92529,
 1049401,3097903,7193917,63855836,227696722,
 555373555,3107337013,16214541261,42428982424,
 94857775849,1097153517901,3194305034913,
 7388609068837,67772177127776]