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A017736 as a simple table

na(n)
721
7373
742701
7567525
761282975
7719757815
78256851595
792898753715
8028987537150
81260887834350
822139280241670
8316141841823510
84112992892764570
85738799683460650
864538340912686850
8726322377293583730

[1,73,2701,67525,1282975,19757815,256851595,
 2898753715,28987537150,260887834350,2139280241670,
 16141841823510,112992892764570,738799683460650,
 4538340912686850,26322377293583730]