# A117489 (b-file synthesized from sequence entry) 1 1 2 6 3 30 4 115 5 374 6 1079 7 2848 8 7005 9 16285 10 36117 11 76981 12 158563 13 317014 14 617349 15 1174400 16 2187584 17 3998057 18 7181362 19 12696179 20 22120549 21 38023748 22 64546190 23 108296742 24 179729895 25 295244362 26 480358370 27 774483006 28 1238052200