# A238437 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 11 5 26 6 60 7 140 8 325 9 758 10 1764 11 4110 12 9573 13 22302 14 51953 15 121035 16 281967 17 656894 18 1530351 19 3565236 20 8305876 21 19350101 22 45079691 23 105021642 24 244667733 25 569999699 26 1327922000 27 3093645310 28 7207231567 29 16790608551 30 39116897242 31 91130208230 32 212305051009 33 494604759540 34 1152275309042