# A052963 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 14 4 40 5 115 6 331 7 953 8 2744 9 7901 10 22750 11 65506 12 188617 13 543101 14 1563797 15 4502774 16 12965221 17 37331866 18 107492824 19 309513251 20 891207887 21 2566130837 22 7388879260 23 21275429893 24 61260158842 25 176391597266 26 507899361905