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A296665 as a simple table

na(n)
01
14
220
396
4444
52000
68840
738528
8166124
9710256
103016056
1112736064
1253530840
13224107936
14935062544
153890018816
1616141765964
1766829954736
18276135664664
191138932645056
204690042582664
2119285299964256
2279196366286704
23324835930747136
241330905207444344

[1,4,20,96,444,2000,8840,38528,166124,710256,
 3016056,12736064,53530840,224107936,935062544,
 3890018816,16141765964,66829954736,276135664664,
 1138932645056,4690042582664,19285299964256,
 79196366286704,324835930747136,1330905207444344]