# A261578 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 8 5 11 6 23 7 26 8 59 9 83 10 89 11 116 12 1103 13 1568 14 5768 15 13376 16 17810 17 18614 18 66209 19 167933 20 188318