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A270471 as a simple table

na(n)
01
14
228
3196
41372
59604
667228
7470596
83294172
923059204
10161414428
111129900996
127909306972
1355365148804
14387556041628
152712892291396
1618990246039772
17132931722278404
18930522055948828
196513654391641796
2045595580741492572
21319169065190448004

[1,4,28,196,1372,9604,67228,470596,3294172,
 23059204,161414428,1129900996,7909306972,
 55365148804,387556041628,2712892291396,
 18990246039772,132931722278404,930522055948828,
 6513654391641796,45595580741492572,
 319169065190448004]