# A147272 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 5 11 13 12 25 13 49 14 141 15 407 16 1043 17 2925 18 11783 19 52869 20 254667 21 1211663