# A239793 (b-file synthesized from sequence entry) 0 1 1 24 2 320 3 10752 4 184320 5 360448 6 23855104 7 94371840 8 285212672 9 267764367360 10 3720515420160 11 987842478080 12 201004469452800 13 103903848824832 14 637716744110080 15 11997870882291712 16 368450744514248704 17 2251799813685248 18 164633587978155851776 19 9367487224930631680