# A104678 (b-file synthesized from sequence entry) 0 126 1 1050 2 4950 3 17325 4 50050 5 126126 6 286650 7 600600 8 1178100 9 2187900 10 3879876 11 6613425 12 10892700 13 17409700 14 27096300 15 41186376 16 61289250 17 89475750 18 128378250 19 181306125 20 252378126 21 346673250 22 470401750 23 631098000 24 837837000 25 1101476376 26 1434925800