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A285270 as a simple table

n a(n)
0 1
1 2
2 14
3 180
4 3340
5 80600
6 2389704
7 83965616
8 3409634960
9 157077960480
10 8093278209760
11 461113571640128
12 28784033772836544
13 1953535902100115840
14 143219579014652040320
15 11279408109860685024000
16 949705205977314865582336
17 85131076752851318807814656
18 8094279370190580822082014720

[1,2,14,180,3340,80600,2389704,83965616,
 3409634960,157077960480,8093278209760,
 461113571640128,28784033772836544,
 1953535902100115840,143219579014652040320,
 11279408109860685024000,949705205977314865582336,
 85131076752851318807814656,
 8094279370190580822082014720]

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Last modified March 29 09:14 EDT 2024. Contains 371268 sequences. (Running on oeis4.)