# A159603 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 16 5 62 6 312 7 2001 8 16796 9 183416 10 2634814 11 49703026 12 1240433524 13 40975503423 14 1803618092422 15 105967390883387 16 8362303039735026 17 888404336012975536 18 127771790716640691664 19 24942884185805223709166