# A006502 (b-file synthesized from sequence entry) 0 1 1 3 2 14 3 60 4 279 5 1251 6 5329 7 21532 8 83225 9 310464 10 1126502 11 4000602 12 13973725 13 48187521 14 164535708 15 557528652 16 1878067349 17 6297614277 18 21043287325 19 70125062642 20 233198372319 21 774246922848 22 2567419361916 23 8505547438596 24 28157369861593 25 93162331494255 26 308108749498202