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A210685 as a simple table

na(n)
1-1
22
3-2
42
5-1
62
72
88
922
1068
11212
12678
132207
147298
1524458
1682928
17284066
18981884
193421316
2012007556
2142416486
22150718772
23538421588
241932856592
256969847484
2625237057112
2791729488352
28334589415278
291224445617887
304494622119426
3116545704494682
3261071167108960
33225982053183050

[-1,2,-2,2,-1,2,2,8,22,68,212,678,2207,7298,24458,
 82928,284066,981884,3421316,12007556,42416486,
 150718772,538421588,1932856592,6969847484,
 25237057112,91729488352,334589415278,
 1224445617887,4494622119426,16545704494682,
 61071167108960,225982053183050]