# A300559 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 37 4 241 5 1801 6 15121 7 141121 8 1451521 9 16329601 10 199584001 11 2634508801 12 37362124801 13 566658892801 14 9153720576001 15 156920924160001 16 2845499424768001 17 54420176498688001 18 1094805903679488001 19 23112569077678080001 20 510909421717094400001 21 11802007641664880640001