# A317708 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 4 6 10 7 20 8 48 9 108 10 255 11 595 12 1435 13 3434 14 8372 15 20419 16 50289 17 124289 18 309122 19 771508 20 1934462