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A283678 as a simple table

n a(n)
0 1
1 2
2 54
3 4500
4 771750
5 225042300
6 99843767100
7 62673358948200
8 52880646612543750
9 57733914846094987500
10 79199384385873103852500
11 133357363417740148141455000
12 270426506783940730406180497500
13 650063718230626755784087734375000
14 1827886309419060919156885553671875000 

[1,2,54,4500,771750,225042300,99843767100,
 62673358948200,52880646612543750,
 57733914846094987500,79199384385873103852500,
 133357363417740148141455000,
 270426506783940730406180497500,
 650063718230626755784087734375000,
 1827886309419060919156885553671875000]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)