# A083485 (b-file synthesized from sequence entry) 2 1 3 8 4 12 5 30 6 105 7 210 8 1155 9 30030 10 1001 11 34034 12 323323 13 277134 14 3187041 15 6374082 16 1062347 17 61616126 18 955049953 19 520936338 20 9116385915 21 674612557710 22 8648878945 23 709208073490 24 15247973580035 25 6099189432014 26 143330951652329