# A173222 (b-file synthesized from sequence entry) 0 0 1 4 2 18 3 672 4 51600 5 6883920 6 1399989780 7 401060653056 8 153389081849472 9 75336980135472000 10 46137556536570417600 11 34425740593629308436480 12 30717476677184291740437120 13 32275806213061043955592058880