# A107310 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 2 5 1 6 5 7 11 8 7 9 1 10 25 11 60 12 46 13 12 14 1 15 125 16 325 17 290 18 106 19 17 20 1