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A054590 as a simple table

n a(n)
1 0
2 1
3 3
4 19
5 244
6 10101
7 1562298
8 885237542
9 1795141933300
10 13031553571814674
11 341286507770733602176
12 32523592049568306757117737
13 11366810480400463340177768296746
14 14669108426561606778443288692015619955
15 70315685953531425166863071956073529852161120 

[0,1,3,19,244,10101,1562298,885237542,
 1795141933300,13031553571814674,
 341286507770733602176,32523592049568306757117737,
 11366810480400463340177768296746,
 14669108426561606778443288692015619955,
 70315685953531425166863071956073529852161120]

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Last modified April 16 18:12 EDT 2024. Contains 371750 sequences. (Running on oeis4.)