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A290772 as a simple table

na(n)
11
22
324
412
52640
67536
79408
82688
9208445760
101082368560
114312566720
1212473296800
1324050669760
1427034640640
1513900259520
161813091520

[1,2,24,12,2640,7536,9408,2688,208445760,
 1082368560,4312566720,12473296800,24050669760,
 27034640640,13900259520,1813091520]