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A280086 as a simple table

n a(n)
1 1
2 3
3 12
4 252
5 1512
6 217728
7 1741824
8 548674560
9 28531077120
10 9244068986880
11 110928827842560
12 3130855237028413440
13 43831973318397788160
14 25247216631397125980160
15 14542396779684744564572160
16 142006504553621530673047142400
17 2556117081965187552114848563200 

[1,3,12,252,1512,217728,1741824,548674560,
 28531077120,9244068986880,110928827842560,
 3130855237028413440,43831973318397788160,
 25247216631397125980160,
 14542396779684744564572160,
 142006504553621530673047142400,
 2556117081965187552114848563200]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)