# A147007 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 10 3 11 6 12 9 13 14 14 23 15 57 16 131 17 385 18 909 19 2527 20 6618 21 23479