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A372321 as a simple table

na(n)
0-1
10
26
381
41620
545765
61671678
774794671
83958829640
9241898775273
1016756621904970
111297547591499819
12111065107263415308
1310412999996499836541
141061234184094567585326
15116812280111404106348415
1613810631408232372091755792
171745470697932523785587735249

[-1,0,6,81,1620,45765,1671678,74794671,3958829640,
 241898775273,16756621904970,1297547591499819,
 111065107263415308,10412999996499836541,
 1061234184094567585326,116812280111404106348415,
 13810631408232372091755792,
 1745470697932523785587735249]