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A091745 as a simple table

na(n)
01
10
2-12
3240
47056
5-1472640
660785472
724634471680
8-6666732039936
9-266945607045120
10818181307311879168
11-225753930347735961600
12-114700401016766429097984
13133755245359458345703342080

[1,0,-12,240,7056,-1472640,60785472,24634471680,
 -6666732039936,-266945607045120,
 818181307311879168,-225753930347735961600,
 -114700401016766429097984,
 133755245359458345703342080]