# A367056 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 17 5 52 6 168 7 561 8 1922 9 6719 10 23871 11 85938 12 312823 13 1149421 14 4257460 15 15880036 16 59594517 17 224856450 18 852491806 19 3245959002 20 12407332166 21 47592364107 22 183139542306 23 706794663136 24 2735053815771 25 10609811267757 26 41251228784198