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A267070 as a simple table

n a(n)
1 1
2 0
3 2
4 44
5 1949
6 119544
7 9966710
8 1094087602
9 153634294614
10 26915214507240
11 5760519575052132
12 1479878539858828536

[1,0,2,44,1949,119544,9966710,1094087602,
 153634294614,26915214507240,5760519575052132,
 1479878539858828536]

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Last modified September 24 12:20 EDT 2020. Contains 337318 sequences. (Running on oeis4.)