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A009047
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Expansion of cos(sin(x)*cosh(x)), even terms only.
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1
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1, -1, -7, 23, 1297, -6129, -894903, 829671, 1879275169, 1886150559, -7580265762535, -85001467923145, 61409100961369265, 1056714909891968687, -781355567634874555799, -25440890573992236442361
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[Cos[Sin[x]*Cosh[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Nov 12 2017 *)
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PROG
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(PARI) x='x+O('x^50); v=Vec(serlaplace(cos(sin(x)*cosh(x)))); vector(#v\2, n, v[2*n-1]) \\ G. C. Greubel, Jul 23 2018
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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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