# A272668 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 1 4 3 5 4 6 4 7 7 8 7 9 8 10 9 11 10 12 11 13 12 14 15 15 15 16 16 17 18 18 18 19 19 20 21 21 22 22 22