# A309717 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 1 4 6 5 28 6 114 7 432 8 1566 9 5517 10 19068 11 65044 12 219852 13 738316 14 2468028 15 8222805 16 27330858 17 90685224 18 300521622 19 994991716 20 3292117698 21 10887332473 22 35992718136 23 118958691528 24 393093822744 25 1298783453112 26 4290755845176 27 14174217683209 28 46821054068430 29 154655837126740