# A342600 (b-file synthesized from sequence entry) 0 0 1 1 2 3 3 7 4 17 5 39 6 91 7 211 8 487 9 1123 10 2589 11 5963 12 13725 13 31583 14 72661 15 167131 16 384377 17 883951 18 2032723 19 4674299 20 10748631 21 24716955 22 56839003 23 130710843 24 300603331 25 691345931 26 1590077703 27 3657329539 28 8412668791 29 19352107787 30 44519281727 31 102422137915