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A211611 as a simple table

n a(n)
2 1
3 9
4 642
5 540982
6 5496576970
7 698491214560174
8 1147342896257677900291
9 25005346993500437111980892595
10 7381619397278667883874693730628586499
11 30009934325456999669083059570156145437948880627
12 1703283943023520710008632777768663744247664926649672215939

[1,9,642,540982,5496576970,698491214560174,
 1147342896257677900291,
 25005346993500437111980892595,
 7381619397278667883874693730628586499,
 30009934325456999669083059570156145437948880627,
 17032839430235207100086327777686637442476649266496\
 72215939]

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Last modified February 18 02:20 EST 2018. Contains 299297 sequences. (Running on oeis4.)