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A099138 as a simple table

na(n)
00
11
26
3108
41080
514256
6163296
72006208
823794560
9287214336
103436494336
1141298398208
12495217981440
135944792559616
1471324450021376
15855971764420608
1610271190988062720
17123257112966660096
181479068428940476416

[0,1,6,108,1080,14256,163296,2006208,23794560,
 287214336,3436494336,41298398208,495217981440,
 5944792559616,71324450021376,855971764420608,
 10271190988062720,123257112966660096,
 1479068428940476416]