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A125028
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a(1)=2, a(n)=2*a(n-1)-floor(sqrt(a(n-1))).
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2, 3, 5, 8, 14, 25, 45, 84, 159, 306, 595, 1166, 2298, 4549, 9031, 17967, 35800, 71411, 142555, 284733, 568933, 1137112, 2273158, 4544809, 9087487, 18171960, 36339658, 72673288, 145338052, 290664049, 581311050
(list; graph; refs; listen; history; internal format)
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