# A027803 (b-file synthesized from sequence entry) 3 35 4 350 5 1890 6 7350 7 23100 8 62370 9 150150 10 330330 11 675675 12 1301300 13 2382380 14 4176900 15 7054320 16 11531100 17 18314100 18 28352940 19 42902475 20 63596610 21 92534750 22 132382250 23 186486300 24 259008750 25 355077450 26 480957750 27 644245875