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A281876 as a simple table

na(n)
10
29
33968
4296865
58437248
6129997260
71312568064
89727799265
956923182080
10276480648702
111154893046400
124259743681004
1314151477247488
1443011568291320
15121065502097664
16318760489739745
17791380439553024
181865315725321293
194197159808767360
209059718006875214

[0,9,3968,296865,8437248,129997260,1312568064,
 9727799265,56923182080,276480648702,1154893046400,
 4259743681004,14151477247488,43011568291320,
 121065502097664,318760489739745,791380439553024,
 1865315725321293,4197159808767360,
 9059718006875214]