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A010838 as a simple table

na(n)
01
1-44
2902
3-11352
496965
5-582692
62428382
7-6245448
83684670
943828180
10-195750104
11340202584
12211248851
13-2418539816
144734800950
15-43313600
16-16560186918
1726632794760
184021681554
19-50231748600
2012519655368

[1,-44,902,-11352,96965,-582692,2428382,-6245448,
 3684670,43828180,-195750104,340202584,211248851,
 -2418539816,4734800950,-43313600,-16560186918,
 26632794760,4021681554,-50231748600,12519655368]