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A283847 as a simple table

na(n)
32
48
536
6140
7522
81920
97030
1025704
1194302
12347488
131286460
144785300
1517879352
1667076096
17252579600
18954306220
193616552422
2013743371072
2152356648380
22199909107900
23764873459802
242932022620160
2511258982291252

[2,8,36,140,522,1920,7030,25704,94302,347488,
 1286460,4785300,17879352,67076096,252579600,
 954306220,3616552422,13743371072,52356648380,
 199909107900,764873459802,2932022620160,
 11258982291252]