# A249675 (b-file synthesized from sequence entry)
1 1
2 10
3 2520
4 49008960
5 1052427228652800
6 18543848132205515927808000
7 3663312848979081767807855264321333760000
8 1860046674511129497317809046448809961990598435124736000000
9 46250563343969315569958487234182581699417368835772148395100189090556723200000000