# A168513 (b-file synthesized from sequence entry) 1 21 2 36 3 300 4 722 5 2493 6 4766 7 9459 8 13091 9 18484 10 18779 11 18048 12 12995 13 9122 14 4424 15 2160 16 639 17 234 18 48 19 8 20 0 21 0