# A328002 (b-file synthesized from sequence entry) 0 1 1 3 2 8 3 22 4 50 5 130 6 280 7 700 8 1470 9 3570 10 7392 11 17556 12 36036 13 84084 14 171600 15 394680 16 802230 17 1823250 18 3695120 19 8314020 20 16812796 21 37505468 22 75716368 23 167657672 24 338019500 25 743642900 26 1497686400 27 3276189000 28 6592494600 29 14348370600 30 28851858720 31 62512360560