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A181599 as a simple table

na(n)
11504
230592
34526272
48353792
5361702144
61081850752
71845991216
82146926592
921818579968
1034357510144
11228354264064
12549746900992
132169800814592
148796057370624
1524038405705152
1680952364306432
17140737345748992
182737658648639872
1923810602502029312
2036979953305070592

[1504,30592,4526272,8353792,361702144,1081850752,
 1845991216,2146926592,21818579968,34357510144,
 228354264064,549746900992,2169800814592,
 8796057370624,24038405705152,80952364306432,
 140737345748992,2737658648639872,
 23810602502029312,36979953305070592]