# A195684 (b-file synthesized from sequence entry) 0 0 1 5 2 9 3 10 4 11 5 18 6 31 7 57 8 104 9 192 10 366 11 701 12 1353 13 2649 14 5194 15 10196 16 20026 17 39686 18 79006 19 157316 20 313279