# A191800 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 16 4 109 5 851 6 7275 7 66393 8 637239 9 6371848 10 65961782 11 703953599 12 7722738071 13 86924392498 14 1002603956938 15 11842465020207 16 143208130730229 17 1773099186411938 18 22483740028949531 19 292129222113885503 20 3891268435685371911