# A373904 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 8 4 30 5 98 6 303 7 937 8 2936 9 9260 10 29209 11 91999 12 289547 13 911255 14 2868341 15 9029425 16 28424456 17 89478064 18 281667368 19 886657848 20 2791106585 21 8786123349 22 27657838272 23 87064092870 24 274068969337 25 862741412709 26 2715822822365 27 8549136056237 28 26911817257385