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A155219 as a simple table

n a(n)
2 1
3 4
4 10
5 45
6 176
7 1305
8 10079
9 117352
10 1561149
11 29980210
12 704867467
13 22571926686
14 912535595499
15 49246939684046
16 3416075823339525
17 312263317852780140 

[1,4,10,45,176,1305,10079,117352,1561149,29980210,
 704867467,22571926686,912535595499,49246939684046,
 3416075823339525,312263317852780140]

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Last modified April 18 15:05 EDT 2024. Contains 371780 sequences. (Running on oeis4.)