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A159522 as a simple table

na(n)
01
13
2-119
3-1125
442321
5702963
6-24976551
7-614805237
820534573985
9691164284643
10-21582336376791
11-949437293473413
1227539617738101489
131540954535989466835
14-41203060308232477191
15-2884999709417821999893
1670454876663552890207041

[1,3,-119,-1125,42321,702963,-24976551,-614805237,
 20534573985,691164284643,-21582336376791,
 -949437293473413,27539617738101489,
 1540954535989466835,-41203060308232477191,
 -2884999709417821999893,70454876663552890207041]