# A355390 (b-file synthesized from sequence entry) 0 0 1 0 2 2 3 6 4 20 5 42 6 110 7 210 8 462 9 870 10 1722 11 3080 12 5852 13 10100 14 18090 15 30800 16 53130 17 87912 18 147840 19 239610 20 392502 21 626472 22 1003002 23 1573770 24 2479050 25 3831806 26 5931660 27 9057090 28 13819806 29 20834660 30 31399212 31 46806122 32 69697452 33 102870306 34 151523790 35 221488806