# A217092 (b-file synthesized from sequence entry) 1 3 2 7 3 15 4 35 5 57 6 99 7 429 8 445 9 731 10 5151 11 12619 12 30061 13 68517 14 111435 15 766963 16 5272667 17 5892979 18 10855425 19 11475773 20 34427205 21 200476101 22 879640035 23 879640081 24 5987618771 25 9464300559 26 13456046373 27 33028477513 28 85307471025