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A309303 as a simple table

na(n)
00
11
2-1
32
4-1
54
62
713
823
968
10164
11439
121146
133067
148231
1522306
1660791
17166684
18459308
191271479
203534116
219859573
2227598757
2377490472
24218183522
25615902899
261742738477
274942022648
2814043034703
2939979680748
30114020882010
31325721340061

[0,1,-1,2,-1,4,2,13,23,68,164,439,1146,3067,8231,
 22306,60791,166684,459308,1271479,3534116,9859573,
 27598757,77490472,218183522,615902899,1742738477,
 4942022648,14043034703,39979680748,114020882010,
 325721340061]