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A231320 as a simple table

na(n)
11536
2192192
330645600
44509951264
5677392128096
6101255199764448
715154743446853216
82267704492520687136
9339353240593608062304
1050782606894918838006496
117599400278857398619862624

[1536,192192,30645600,4509951264,677392128096,
 101255199764448,15154743446853216,
 2267704492520687136,339353240593608062304,
 50782606894918838006496,7599400278857398619862624]