# A024946 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 5 5 7 6 13 7 25 8 45 9 81 10 145 11 311 12 593 13 1103 14 2137 15 4401 16 8689 17 16769 18 32993 19 68395 20 137141 21 270343 22 541349 23 1119489 24 2268541 25 4545665 26 9161233 27 19115279 28 39020945 29 78883311 30 160667153 31 335141345 32 688565217 33 1403294593 34 2872624641 35 6015309539