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A015272 as a simple table

na(n)
31
4-104
513546
6-1679704
7210302171
8-26279294704
93285123767796
10-410635172794704
1151329529054158421
12-6416187820400919704
13802023560334345174046
14-100252942972187432169704

[1,-104,13546,-1679704,210302171,-26279294704,
 3285123767796,-410635172794704,51329529054158421,
 -6416187820400919704,802023560334345174046,
 -100252942972187432169704]