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A152688 as a simple table

n a(n)
1 1
2 1
3 2
4 48
5 414720
6 309586821120000
7 62298599877271470735360000000000
8 221419738218975714643056286355472083897548800000000000000000000
9 30963454718960054822969246779894642673092903344400531870724683866888280945459200000000000000000000000000000000000 

[1,1,2,48,414720,309586821120000,
 62298599877271470735360000000000,
 22141973821897571464305628635547208389754880000000\
 0000000000000,
 30963454718960054822969246779894642673092903344400\
 53187072468386688828094545920000000000000000000000\
 0000000000000]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)