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A009814 as a simple table

na(n)
00
11
22
33
4-12
5-163
6-1178
7-4529
827496
9870169
1011481482
1185659387
12-308661540
13-25105525963
14-525814629650
15-6328753571321
16-1529929548080
172300980143865777
1871594692481521682
191258339660640728947

[0,1,2,3,-12,-163,-1178,-4529,27496,870169,
 11481482,85659387,-308661540,-25105525963,
 -525814629650,-6328753571321,-1529929548080,
 2300980143865777,71594692481521682,
 1258339660640728947]