| 2, 4, 8, 15, 26, 48, 89, 165, 305, 561, 1034, 1908, 3521, 6496, 11982, 22101, 40770, 75210, 138741, 255934, 472117, 870911, 1606567, 2963628, 5466988, 10084919, 18603592, 34317946, 63306130, 116780470, 215424285, 397391986, 733066807
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