# A146743 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 13 8 29 9 57 10 123 11 437 12 1523 13 7643 14 32273 15 153925 16 786845 17 5340469 18 36899655 19 318800081 20 2591600741 21 26626203639 22 272703572385