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A136558
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G.f.: A(x) = Sum_{n>=0} asinh( 2^(2n+1)*x )^(2n+1) / (2n+1)! ; a power series in x with integer coefficients.
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3
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2, 0, 84, 0, 276892, 0, 111457917800, 0, 6660816097416169260, 0, 66597307693046550483175282456, 0, 120167520447600665027319450022840022638104, 0
(list; graph; refs; listen; history; internal format)
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