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A015381 as a simple table

na(n)
91
10-348678440
11136773736379522605
12-52916360230556551635386480
1320504007291105533368839949866598015
14-7943538006665671364765186721016327317109448
153077495169782617972230910362141435994555138110002155

[1,-348678440,136773736379522605,
 -52916360230556551635386480,
 20504007291105533368839949866598015,
 -7943538006665671364765186721016327317109448,
 30774951697826179722309103621414359945551381100021\
 55]