# A109777 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 15 4 101 5 829 6 7891 7 84735 8 1009065 9 13170841 10 186798003 11 2859068831 12 46960097413 13 823787983021 14 15370572776091 15 303929827526887 16 6348320745774993 17 139663855708967665 18 3227812335094695171 19 78180132507785056399 20 1980181972528939129861 21 52344600987011191983613