# A148832 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 27 5 88 6 325 7 1204 8 4601 9 18133 10 72686 11 294197 12 1216167 13 5065413 14 21297716 15 90542800 16 387277663 17 1667992428 18 7234627401 19 31523898473 20 138104950452 21 607877034424 22 2685707086988 23 11914917614606 24 53041057811837 25 236857958955771 26 1061063281105099 27 4765996658642398 28 21463238975898943