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A177321 as a simple table

n a(n)
0 1
1 2
2 416
3 664958
4 1792874048
5 6232521421502
6 25328979140590460
7 114573118435555703030
8 560523113474283819256640
9 2911820015993491302722966990
10 15861703283168731825003935183416
11 89796737967084981726163781067177194
12 524830705066715697873367329722967841532

[1,2,416,664958,1792874048,6232521421502,
 25328979140590460,114573118435555703030,
 560523113474283819256640,
 2911820015993491302722966990,
 15861703283168731825003935183416,
 89796737967084981726163781067177194,
 524830705066715697873367329722967841532]

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)