# A347496 (b-file synthesized from sequence entry) 1 1 2 2 3 9 4 12 5 25 6 50 7 120 8 344 9 400 10 770 11 1120 12 3920 13 13566 14 13734 15 19845 16 22748 17 148148 18 167854 19 176220 20 889896 21 2946216 22 3685416 23 5072256 24 7139280 25 8521056 26 9058900 27 9625336 28 17825857 29 19392072 30 27504848 31 76952788 32 106691001 33 162789696 34 198582784 35 212847225