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A331769
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El Gradechi's hybrid coefficients alpha^{4,6}_n.
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3
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-264, -3456, 0, -23520, 12600, -88704, 68544, -250560, 225720, -591360, 576576, -1231776, 1255800, -2338560, 2448000, -4132224, 4395384, -6894720, 7405440, -10977120, 11858616, -16807296, 18216000, -24897600, 27027000, -35852544, 38937024, -50376480, 54695160, -69281280, 75161856
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OFFSET
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0,1
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COMMENTS
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See El Gradechi (2013) for precise definition.
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LINKS
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FORMULA
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a(n) = (-1)^n*240*binomial(n+5, 5) - 504*binomial(n+3, 3). - Robin Visser, Jul 29 2023
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PROG
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(Magma) [(-1)^n*240*Binomial(n+5, 5)-504*Binomial(n+3, 3): n in [0..100]]; // Robin Visser, Jul 29 2023
(PARI) a(n) = (-1)^n*240*binomial(n+5, 5)-504*binomial(n+3, 3); \\ Robin Visser, Jul 29 2023
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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