# A115340 (b-file synthesized from sequence entry) 2 1 3 1 4 2 5 5 6 14 7 50 8 233 9 1248 10 7593 11 49536 12 339483 13 2404472 14 17468202 15 129459090 16 975647292 17 7458907217 18 57744122366 19 452028275567 20 3573870490382