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A258506 as a simple table

na(n)
110762
262096
3425880
43064020
521229200
6147424970
71030931222
87213265988
950406135414
10352268263599
112462421098294
1217213808196491
13120330118364382
14841144197827542
155879904189348622
1641102758742106076
17287323364592421812

[10762,62096,425880,3064020,21229200,147424970,
 1030931222,7213265988,50406135414,352268263599,
 2462421098294,17213808196491,120330118364382,
 841144197827542,5879904189348622,
 41102758742106076,287323364592421812]