# A107390 (b-file synthesized from sequence entry) 1 4 2 6 3 18 4 36 5 76 6 147 7 285 8 532 9 984 10 1795 11 3237 12 5793 13 10293 14 18168 15 31887 16 55709 17 96926 18 167972 19 290136 20 499615 21 857947 22 1469576 23 2511369 24 4282663 25 7289002 26 12383250 27 21002336 28 35564859 29 60136917 30 101547211 31 171253466 32 288461204