# A095092 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 2 6 4 7 7 8 10 9 16 10 30 11 51 12 88 13 153 14 277 15 509 16 905 17 1660 18 3079 19 5535 20 10234 21 19053