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A204460 as a simple table

na(n)
01
14
286
33486
4178870
510388788
6652694106
743304881124
82990752400778
9212997373622366
1015542763534960598
111156764114321375362
1287507330113965391948
136711208401368504338646
14520758394504342278328914
1540818243590325732399837872
163227693268242421225516534768

[1,4,86,3486,178870,10388788,652694106,
 43304881124,2990752400778,212997373622366,
 15542763534960598,1156764114321375362,
 87507330113965391948,6711208401368504338646,
 520758394504342278328914,
 40818243590325732399837872,
 3227693268242421225516534768]