# A224342 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 10 6 18 7 32 8 57 9 101 10 179 11 318 12 564 13 1002 14 1778 15 3157 16 5604 17 9949 18 17661 19 31352 20 55657