# A370555 (b-file synthesized from sequence entry) 1 2 2 5 3 25 4 425 5 221 6 8177 7 204425 8 13287625 9 544792625 10 2200962205 11 134258694505 12 19467510703225 13 9791351537125 14 1928896252813625 15 8718611062717585 16 2240683043118419345 17 1124218135820660225 18 365370894141714573125 19 66132131839650337735625 20 1060759394707991417279425