# A150033 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 17 4 56 5 187 6 647 7 2283 8 8183 9 29742 10 109129 11 403667 12 1504455 13 5637671 14 21235076 15 80333014 16 305030726 17 1162135296 18 4440424269 19 17010967118 20 65320831670 21 251350805303 22 969033651846 23 3742365310049 24 14475611770191 25 56073194209612 26 217494453475571 27 844640587355439 28 3283870660839249