# A199546 (b-file synthesized from sequence entry) 1 144 2 144 3 288 4 360 5 360 6 360 7 720 8 720 9 720 10 720 11 1800 12 3456 13 8640 14 8640 15 8640 16 8640 17 17280 18 17280 19 21600 20 43200 21 43200 22 207360 23 207360 24 518400 25 518400 26 1036800 27 12441600