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A091106 as a simple table

na(n)
0-1
1-1
20
38
478
5764
68310
7100988
81362438
920246444
10328972470
115805917468
12110645911398
132265191981324
1449589790516630
151156201277261948
1628605950745797958
17748605590542359404
1820661245832389468790
19599820758571599742428
2018272940402442730318118

[-1,-1,0,8,78,764,8310,100988,1362438,20246444,
 328972470,5805917468,110645911398,2265191981324,
 49589790516630,1156201277261948,28605950745797958,
 748605590542359404,20661245832389468790,
 599820758571599742428,18272940402442730318118]