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A274482 as a simple table

na(n)
11
22
36
440
5320
62976
735392
8538112
99810432
10200903680
114480990976
12107974474752
132804574622720
1478474060105728
152366867031521280
1677011634301730816
172702517873238802432
18102101344967992541184
194139003906606265204736
20179219001275949107118080
218245453502533567172837376
22400905721912603103762317312
2320495451270608555635778256896
241096768710243163144517540904960
2561205572460929693462200057856000
263551250424196976573288927331352576
27213729944352034835154759793458020352
2813318442043189965481553192153652396032

[1,2,6,40,320,2976,35392,538112,9810432,200903680,
 4480990976,107974474752,2804574622720,
 78474060105728,2366867031521280,77011634301730816,
 2702517873238802432,102101344967992541184,
 4139003906606265204736,179219001275949107118080,
 8245453502533567172837376,
 400905721912603103762317312,
 20495451270608555635778256896,
 1096768710243163144517540904960,
 61205572460929693462200057856000,
 3551250424196976573288927331352576,
 213729944352034835154759793458020352,
 13318442043189965481553192153652396032]