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A214076
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a(n) = ceiling(e^(n/3)).
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2
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2, 2, 3, 4, 6, 8, 11, 15, 21, 29, 40, 55, 77, 107, 149, 208, 290, 404, 564, 786, 1097, 1531, 2136, 2981, 4161, 5807, 8104, 11309, 15783, 22027, 30741, 42902, 59875, 83562, 116619, 162755, 227143, 317004, 442414, 617438
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OFFSET
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1,1
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LINKS
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MAPLE
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MATHEMATICA
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PROG
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(Derive) PROG(y := [], n := 60, LOOP(IF(n = 0, RETURN y), y := ADJOIN(CEILING(ê^(n/3)), y), n := n - 1))
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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