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A276475 as a simple table

na(n)
00
1-1
21
33
4-9
5-69
6483
75355
8-80325
9-2081205
1064517355
112738408715
12-172519749045
13-17158004483445
142179066569397515
15365466952872801675
16-93194072982564427125
17-36694334101466364023925
1818750804725849312016225675

[0,-1,1,3,-9,-69,483,5355,-80325,-2081205,
 64517355,2738408715,-172519749045,-17158004483445,
 2179066569397515,365466952872801675,
 -93194072982564427125,-36694334101466364023925,
 18750804725849312016225675]