# A234600 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 105 5 63 6 1155 7 6435 8 45045 9 85085 10 2909907 11 1322685 12 111546435 13 128707425 14 717084225 15 9704539845 16 4512611027925 17 265447707525 18 501401225325 19 8787716212275 20 33393321606645