# A153364 (b-file synthesized from sequence entry) 1 4 2 8 3 14 4 28 5 50 6 100 7 180 8 360 9 650 10 1300 11 2350 12 4700 13 8500 14 17000 15 30750 16 61500 17 111250 18 222500 19 402500 20 805000 21 1456250 22 2912500 23 5268750 24 10537500 25 19062500 26 38125000 27 68968750 28 137937500 29 249531250 30 499062500 31 902812500 32 1805625000