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A270527 as a simple table

n a(n)
1 2
2 2
3 4
4 21
5 168
6 10754
7 25461498
8 105205312405537
9 2273436544813042470905435068
10 580632014636885174037652548241171956049642213022500047
11 105076738483143967759563061000636154401568577693011463452250666394865203888381724797435152416096091560375615 

[2,2,4,21,168,10754,25461498,105205312405537,
 2273436544813042470905435068,
 58063201463688517403765254824117195604964221302250\
 0047,
 10507673848314396775956306100063615440156857769301\
 14634522506663948652038883817247974351524160960915\
 60375615]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)