# A236571 (b-file synthesized from sequence entry) 0 0 1 1 2 3 3 5 4 15 5 38 6 75 7 190 8 375 9 950 10 1875 11 4750 12 10296 13 23750 14 51480 15 118750 16 257400 17 593750 18 1287000 19 2968750 20 6435000 21 14843750 22 34182196 23 74218750 24 170910980 25 371093750 26 854554900 27 1855468750 28 4272774500 29 9277343750 30 21363872500 31 46386718750