# A071306 (b-file synthesized from sequence entry) 1 1 2 8 3 336 4 112896 5 276595200 6 4662288691200 7 546914437209907200 8 450219964711195607040000 9 2596509480922336727312302080000 10 104784757384177668346109081238896640000 11 29597339316082819652234687848790174733434880000