# A349089 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 6 4 24 5 121 6 726 7 5082 8 40656 9 365905 10 3659050 11 40249550 12 482994600 13 6278929801 14 87905017214 15 1318575258210 16 21097204131360 17 358652470233121 18 6455744464196178 19 122659144819727382 20 2453182896394547640 21 51516840824285500441 22 1133370498134281009702