# A371870 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 14 4 51 5 189 6 709 7 2683 8 10220 9 39130 10 150438 11 580328 12 2245004 13 8705686 14 33828704 15 131688362 16 513445147 17 2004688605 18 7836832057 19 30670416703 20 120153739079 21 471143251989 22 1848978071615 23 7261781367389 24 28540427527441 25 112243216215879 26 441693646453729