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A282101 as a simple table

na(n)
01
1456
250328
3-470496
4-21784008
5-234371664
6-1446514848
7-6502690752
8-23328111240
9-71276388312
10-191952331632
11-468159788448
12-1052750026272
13-2212261706256
14-4394299104576
15-8303419066176
16-15060718806024
17-26284654025712
18-44471780630856

[1,456,50328,-470496,-21784008,-234371664,
 -1446514848,-6502690752,-23328111240,-71276388312,
 -191952331632,-468159788448,-1052750026272,
 -2212261706256,-4394299104576,-8303419066176,
 -15060718806024,-26284654025712,-44471780630856]