# A147160 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 9 9 25 10 53 11 97 12 275 13 939 14 2977 15 11455 16 54387 17 273381 18 1565737 19 8740687 20 56416565 21 398132663