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A221754 as a simple table

n a(n)
1 0
2 171
3 1680
4 117067
5 3143356
6 128008894
7 4330440582
8 157745434617
9 5576943832916
10 199566264190831
11 7105753950441404
12 253532970709774991
13 9038233928809650256 

[0,171,1680,117067,3143356,128008894,4330440582,
 157745434617,5576943832916,199566264190831,
 7105753950441404,253532970709774991,
 9038233928809650256]

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Last modified April 24 07:54 EDT 2024. Contains 371922 sequences. (Running on oeis4.)