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A109057 as a simple table

n a(n)
0 1
1 1
2 5
3 115
4 12885
5 7173370
6 19940684251
7 277078842941900
8 19249144351745111125
9 6686277384080730564862875
10 11612516024884420913314995604000
11 100841213012622614260440382077516990500
12 4378443591626306255827149380635713364079323075 

[1,1,5,115,12885,7173370,19940684251,
 277078842941900,19249144351745111125,
 6686277384080730564862875,
 11612516024884420913314995604000,
 100841213012622614260440382077516990500,
 4378443591626306255827149380635713364079323075]

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)