# A277188 (b-file synthesized from sequence entry) 0 1 1 7 2 43 3 281 4 1896 5 13112 6 92359 7 659941 8 4769758 9 34797170 10 255838760 11 1893389720 12 14091400480 13 105385445856 14 791504226943 15 5966958725021 16 45133376297922 17 342400478465678 18 2604549070175770 19 19860078537996958 20 151769147958738016