# A123704 (b-file synthesized from sequence entry) 1 6 2 8 3 9 4 11 5 15 6 31 7 48 8 60 9 314 10 701 11 940 12 942 13 2164 14 2981 15 3810 16 6971 17 12068 18 13641 19 16502 20 68800