# A148322 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 41 6 132 7 442 8 1524 9 5470 10 20059 11 74978 12 286336 13 1108833 14 4349771 15 17293196 16 69428179 17 281307331 18 1150317126 19 4738033915 20 19649014226 21 82036268908 22 344417930644 23 1453617282097 24 6166684567631 25 26276294251448 26 112432261367960 27 483045501643010 28 2082734215839570