# A083421 (b-file synthesized from sequence entry) 0 1 1 8 2 46 3 242 4 1234 5 6218 6 31186 7 156122 8 780994 9 3905738 10 19530226 11 97654202 12 488277154 13 2441398058 14 12207014866 15 61035123482 16 305175715714 17 1525878775178 18 7629394269106 19 38146972131962 20 190734862232674