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A060073 as a simple table

na(n)
21
32
47
539
6311
73268
842799
9672605
1012345679
11259374246
126140565047
13161792257795
144696537119847
15148943500129544
165124095576030431
17190082780764323705
187563707819165039903
19321380710796022350410
2014523213296398891966759
21695546073617378871592991

[1,2,7,39,311,3268,42799,672605,12345679,
 259374246,6140565047,161792257795,4696537119847,
 148943500129544,5124095576030431,
 190082780764323705,7563707819165039903,
 321380710796022350410,14523213296398891966759,
 695546073617378871592991]