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A364583 as a simple table

na(n)
01
12
28
320
440
580
6140
7320
8280
9800
10560
115120
121120
136400
142240
153920
163080
1740000
185600
19102400
206160
2115680
2235840
2320971520
2412320
25110000
2644800
2739200
2824640
291342177280
3030800
31193600
3240040
33250880
34280000
35440000
3661600
371210000
38716800
39313600
4080080
415497558138880

[1,2,8,20,40,80,140,320,280,800,560,5120,1120,
 6400,2240,3920,3080,40000,5600,102400,6160,15680,
 35840,20971520,12320,110000,44800,39200,24640,
 1342177280,30800,193600,40040,250880,280000,
 440000,61600,1210000,716800,313600,80080,
 5497558138880]