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A253864 as a simple table

na(n)
1512
231632
33939840
41052857184
5633276761856
6896906647300128
72875255935248467200
821455396352019560697376
9370924232864752698632296192
1014893383155687607471120823056160
111383367306744696268677387801027845376

[512,31632,3939840,1052857184,633276761856,
 896906647300128,2875255935248467200,
 21455396352019560697376,
 370924232864752698632296192,
 14893383155687607471120823056160,
 1383367306744696268677387801027845376]