# A049957 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 8 5 15 6 37 7 69 8 137 9 273 10 682 11 1296 12 2560 13 5098 14 10189 15 20373 16 40745 17 81489 18 203722 19 387072 20 763960 21 1522829 22 3043120 23 6084976 24 12169338 25 24338267 26 48676398 27 97352728 28 194705424 29 389410826 30 778821645 31 1557643285 32 3115286569 33 6230573137 34 15576432842 35 29595222400