# A366809 (b-file synthesized from sequence entry) 1 1 2 6 3 30 4 240 5 2310 6 30030 7 518940 8 9943560 9 230876448 10 6551588160 11 200561595684 12 7471933410000 13 304250263527210 14 13082853940673340 15 618109122639794688 16 32589631537463089128 17 1922760350251477679196 18 117386696543681561301312 19 7906535060701218163040640