# A062120 (b-file synthesized from sequence entry) 1 1 2 2500 3 3600 4 62500 5 14379264 6 57760000 7 141376000000 8 245495475625 9 390625000000 10 943971582724 11 4482669527413081 12 8790937600000000 13 31561776563446336 14 10235319926865509025