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A299430 as a simple table

na(n)
01
12
25
313
443
55
6-19
741
81
9-7243
10923
1123183
12-21401
1364243259
14-73
15-471741703
16328578883
17-11162934047
18-103170103
19405632121933911
20-811862551
216065578925646109
222180051549129
23-261709011005693843
2436779766732769
25-1552304807519349743393
26-33230318647573
27727642520296392573166003
28-85602927913097260249
293885938896026347271301517

[1,2,5,13,43,5,-19,41,1,-7243,923,23183,-21401,
 64243259,-73,-471741703,328578883,-11162934047,
 -103170103,405632121933911,-811862551,
 6065578925646109,2180051549129,
 -261709011005693843,36779766732769,
 -1552304807519349743393,-33230318647573,
 727642520296392573166003,-85602927913097260249,
 3885938896026347271301517]