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A303130 as a simple table

na(n)
01
1-3
2-9
3-288
4459
5-19278
6-1539
7-1265301
810734525
9-147277926
10520204923
11-7511358663
1288687160577
13-668191863951
145357547144702
15-87542760890124
16967961569696722
17-5115624735401361
1846065749188891275
19-430898393089547667
206203508335817169257

[1,-3,-9,-288,459,-19278,-1539,-1265301,10734525,
 -147277926,520204923,-7511358663,88687160577,
 -668191863951,5357547144702,-87542760890124,
 967961569696722,-5115624735401361,
 46065749188891275,-430898393089547667,
 6203508335817169257]