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A028692 as a simple table

na(n)
01
122
211616
3141320256
439547060439040
5254538406080331591680
637680818974206486508802211840
7128296611269497862923425473853914480640
810047034036599529256387830050150921763777884979200

[1,22,11616,141320256,39547060439040,
 254538406080331591680,
 37680818974206486508802211840,
 128296611269497862923425473853914480640,
 10047034036599529256387830050150921763777884979200\
 ]