# A074653 (b-file synthesized from sequence entry)
1 120
2 56640
3 56055960
4 76385030400
5 124672148625000
6 228479027903507520
7 453922725503344566840
8 957089306644111555200000
9 2112293133628003412534448000
10 4833477575790121928875488600000