# A126407 (b-file synthesized from sequence entry) 0 1 1 20 2 94 3 450 4 2168 5 10486 6 50848 7 247024 8 1201730 9 5852530 10 28526860 11 139144760 12 679090456 13 3315836420 14 16196773236 15 79141717426 16 386812618952 17 1891013450430 18 9246370600422 19 45218609940844 20 221167392509842