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A317209 as a simple table

na(n)
10
20
30
40
57
6-13
7219
8-598
911570
10-44280
11995254
12-4960662
13126624718
14-783821598
1522344623929
16-166137700653
175222279193717
18-45502938763929
191561364880901471
20-15643758252397591
21581233980566953138
22-6596831160162093686
23263618530870787131186
24-3348367300606844944161

[0,0,0,0,7,-13,219,-598,11570,-44280,995254,
 -4960662,126624718,-783821598,22344623929,
 -166137700653,5222279193717,-45502938763929,
 1561364880901471,-15643758252397591,
 581233980566953138,-6596831160162093686,
 263618530870787131186,-3348367300606844944161]