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A158268 as a simple table

na(n)
11
22
320
4684
584864
640783952
778562790592
8613738473236928
919459342629747109248
102496653806284295319455488
111291725241770954532057108070400
122687434858858114549619735481969223680

[1,2,20,684,84864,40783952,78562790592,
 613738473236928,19459342629747109248,
 2496653806284295319455488,
 1291725241770954532057108070400,
 2687434858858114549619735481969223680]