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A290770 as a simple table

na(n)
01
11
216
311664
4764411904
57464960000000000
616249593066946560000000000
711020848942410302096869949440000000000
83102093199396597590886754340698424229232640000000000
9465607547420733489126893933985879279492195953053596584509440000000000

[1,1,16,11664,764411904,7464960000000000,
 16249593066946560000000000,
 11020848942410302096869949440000000000,
 31020931993965975908867543406984242292326400000000\
 00,
 46560754742073348912689393398587927949219595305359\
 6584509440000000000]