# A218211 (b-file synthesized from sequence entry) 1 0 2 0 3 4 4 10 5 15 6 49 7 147 8 407 9 1084 10 3010 11 8756 12 25145 13 73424 14 215375 15 631828 16 1870092 17 5562131 18 16584139 19 49630873 20 148917071 21 448088250