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A030253 as a simple table

n a(n)
1 1
2 4
3 1485
4 75503872
5 1017252851596875
6 5757133327963849592814528
7 20215881652044379995902152075055222830
8 61135717735233219050448568789931104340315383312314368

[1,4,1485,75503872,1017252851596875,
 5757133327963849592814528,
 20215881652044379995902152075055222830,
 61135717735233219050448568789931104340315383312314\
 368]

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Last modified January 22 12:55 EST 2022. Contains 350481 sequences. (Running on oeis4.)