# A095687 (b-file synthesized from sequence entry) 1 0 2 10 3 50 4 250 5 1250 6 6250 7 31250 8 156250 9 781250 10 3906250 11 19531250 12 97656250 13 488281250 14 2441406250 15 12207031250 16 61035156250 17 305175781250 18 1525878906250 19 7629394531250 20 38146972656250 21 190734863281250