# A292797 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 24 4 1728 5 1658880 6 17915904000 7 4334215495680000 8 18349334722510848000000 9 2556904928296218824540160000000 10 8768179290592246332614309314560000000000 11 1343991010969776301093243630262125854720000000000000