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A266919 as a simple table

n a(n)
1 1
2 0
3 4
4 23
5 398
6 23432
7 1841274
8 193070360
9 26165335486
10 4456558300940
11 932617500467182 

[1,0,4,23,398,23432,1841274,193070360,26165335486,
 4456558300940,932617500467182]

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Last modified July 31 16:05 EDT 2024. Contains 374802 sequences. (Running on oeis4.)