# A283678 (b-file synthesized from sequence entry)
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