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A064310 as a simple table

na(n)
01
11
20
31
4-2
56
6-18
757
8-186
9622
10-2120
117338
12-25724
1391144
14-325878
151174281
16-4260282
1715548694
18-57048048
19210295326
20-778483932
212892818244
22-10786724388
2340347919626
24-151355847012
25569274150156

[1,1,0,1,-2,6,-18,57,-186,622,-2120,7338,-25724,
 91144,-325878,1174281,-4260282,15548694,-57048048,
 210295326,-778483932,2892818244,-10786724388,
 40347919626,-151355847012,569274150156]