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A015258 as a simple table

n a(n)
2 1
3 43
4 2150
5 105050
6 5149551
7 252313293
8 12363454300
9 605808540100
10 29684623509101
11 1454546516636543
12 71272779562356450
13 3492366196825305150
14 171125943656551078651
15 8385171239086224969793
16 410873390715818468708600
17 20132796145070950850400200

[1,43,2150,105050,5149551,252313293,12363454300,
 605808540100,29684623509101,1454546516636543,
 71272779562356450,3492366196825305150,
 171125943656551078651,8385171239086224969793,
 410873390715818468708600,
 20132796145070950850400200]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)