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A022258 as a simple table

n a(n)
7 1
8 5380840
9 26058095733124
10 124806266065883690200
11 597035499217287155085549610
12 2855650645340126913932218722028600
13 13658514212390616911370927114097728660820 

[1,5380840,26058095733124,124806266065883690200,
 597035499217287155085549610,
 2855650645340126913932218722028600,
 13658514212390616911370927114097728660820]

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Last modified August 31 17:53 EDT 2024. Contains 375572 sequences. (Running on oeis4.)