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A008353 as a simple table

na(n)
01
14
220
396
4432
51856
67744
731744
8128768
9519168
102085888
118364032
1233501184
13134103040
14536625152
152146959360
168588820480
1734357379072
18137433972736
19549745328128
202199001235456
218796046884864
2235184275619840
23140737287028736
24562949533990912

[1,4,20,96,432,1856,7744,31744,128768,519168,
 2085888,8364032,33501184,134103040,536625152,
 2146959360,8588820480,34357379072,137433972736,
 549745328128,2199001235456,8796046884864,
 35184275619840,140737287028736,562949533990912]