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A251670 as a simple table

n a(n)
0 1
1 9
2 242
3 11824
4 856824
5 82986080
6 10097121280
7 1481787433920
8 254874712419200
9 50305519571800960
10 11209381628379724800
11 2783746998856794752000
12 762476362390276346060800
13 228363072063685762536960000
14 74247696727054926125971251200
15 26044746725090717967744412672000

[1,9,242,11824,856824,82986080,10097121280,
 1481787433920,254874712419200,50305519571800960,
 11209381628379724800,2783746998856794752000,
 762476362390276346060800,
 228363072063685762536960000,
 74247696727054926125971251200,
 26044746725090717967744412672000]

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Last modified September 16 12:57 EDT 2024. Contains 375976 sequences. (Running on oeis4.)