# A171551 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 3 4 4 5 7 6 8 7 9 8 10 9 12 10 13 11 15 12 18 13 20 14 21 15 22 16 23 17 24 18 26 19 27 20 29 21 37 22 50