# A207321 (b-file synthesized from sequence entry) 0 0 1 3 2 18 3 111 4 750 5 5403 6 40572 7 313407 8 2471166 9 19791003 10 160459068 11 1313922063 12 10847561088 13 90174127683 14 754009158018 15 6336733626111 16 53489159252670 17 453258909448635 18 3854034482891724 19 32871004555812111 20 281127047928811200 21 2410285909684370787 22 20711470169495359602 23 178337708176330555839