# A012198 (b-file synthesized from sequence entry) 0 1 1 -2 2 32 3 -1056 4 77696 5 -8411776 6 1476954112 7 -342658078720 8 110693077745664 9 -44684649940516864 10 23059986721115963392 11 -14340030701132323422208 12 10822861233504969629892608