# A370931 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 30 4 340 5 5180 6 99360 7 2300830 8 62473600 9 1946941920 10 68507714800 11 2686816932800 12 116225776497600 13 5497681373384200 14 282305750023897600 15 15640212734095950000 16 929908726447266966400 17 59061538103044360083200 18 3990922849835432102592000