# A271944 (b-file synthesized from sequence entry) 0 0 1 2 2 4 3 22 4 56 5 250 6 732 7 2926 8 9264 9 34866 10 115316 11 419846 12 1422824 13 5086122 14 17471692 15 61823966 16 213983072 17 752927074 18 2616950756 19 9179311350 20 31978941080 21 111975792474 22 390606950844 23 1366410142030 24 4769896907152 25 16676981234578 26 58239643256916