# A140832 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 12 4 30 5 75 6 188 7 470 8 1175 9 2938 10 7345 11 18362 12 45905 13 114762 14 286905 15 717262 16 1793155 17 4482888 18 11207220 19 28018050 20 70045125 21 175112812 22 437782030 23 1094455075 24 2736137688 25 6840344220 26 17100860550 27 42752151375 28 106880378438