# A099516 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 5 4 10 5 23 6 50 7 112 8 246 9 545 10 1202 11 2658 12 5870 13 12972 14 28656 15 63315 16 139880 17 309049 18 682790 19 1508527 20 3332850 21 7363430 22 16268356 23 35942447 24 79409300 25 175442668 26 387613604 27 856372740 28 1892023992 29 4180136405 30 9235369230