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A175563 as a simple table

n a(n)
0 1
1 2
2 15
3 334
4 18521
5 2293896
6 586774783
7 292184148320
8 270280183791969
9 447043237292379520
10 1280479639717884356831
11 6180626271969237488205312 

[1,2,15,334,18521,2293896,586774783,292184148320,
 270280183791969,447043237292379520,
 1280479639717884356831,6180626271969237488205312]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)