# A151174 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 49 4 219 5 971 6 4499 7 20679 8 97652 9 458010 10 2187664 11 10392377 12 50018335 13 239690199 14 1159912997 15 5593476880 16 27178383256 17 131685711649 18 641876232929 19 3121517496002 20 15253605572885 21 74398068178947 22 364302080576825 23 1781098822234544 24 8736369426482435 25 42797279032088982 26 210226191534353452