# A145547 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 4 5 9 6 20 7 48 8 115 9 286 10 719 11 1841 12 4762 13 12470 14 32918 15 87628 16 234795 17 633000 18 1715435 19 4671098 20 12772707 21 35059815 22 96567161 23 266818396 24 739344427