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A075848 as a simple table

na(n)
00
16
236
3210
41224
57134
641580
7242346
81412496
98232630
1047983284
11279667074
121630019160
139500447886
1455372668156
15322735561050
161881040698144
1710963508627814
1863900011068740
19372436557784626
202170719335639016

[0,6,36,210,1224,7134,41580,242346,1412496,
 8232630,47983284,279667074,1630019160,9500447886,
 55372668156,322735561050,1881040698144,
 10963508627814,63900011068740,372436557784626,
 2170719335639016]