# A033141 (b-file synthesized from sequence entry) 1 1 2 5 3 25 4 126 5 630 6 3150 7 15751 8 78755 9 393775 10 1968876 11 9844380 12 49221900 13 246109501 14 1230547505 15 6152737525 16 30763687626 17 153818438130 18 769092190650 19 3845460953251 20 19227304766255 21 96136523831275 22 480682619156376