# A174123 (b-file synthesized from sequence entry) 0 1 1 4 2 19 3 112 4 751 5 5404 6 40573 7 313408 8 2471167 9 19791004 10 160459069 11 1313922064 12 10847561089 13 90174127684 14 754009158019 15 6336733626112 16 53489159252671 17 453258909448636 18 3854034482891725 19 32871004555812112 20 281127047928811201