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A059367
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From solution to x = tan x (next term is not an integer).
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0
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OFFSET
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0,2
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COMMENTS
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Suppose 1/y = 1/x + arctan(x). Then arctan(x) = Sum_{n>=0} a(n) * y^(2n+1)/(2n+1)!!. Note that a(6) = 6316012/5. a(7) = 38759594. - _Michael Somos_, Jan 01 2021
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REFERENCES
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L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 171, #33.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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_N. J. A. Sloane_, Jan 28 2001
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STATUS
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approved
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