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A012532
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sech(sinh(x)*sin(x)) = 1-12/4!*x^4+8848/8!*x^8-45051072/12!*x^12...
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0
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1, -12, 8848, -45051072, 840261660928, -41695924253002752, 4537436258866404364288, -951427888272965045905047552, 350377450379688317757442429616128, -211362906255307072670284412178232246272, 197818950974274356812042952303539935429787648
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history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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With[{nn=40}, Take[CoefficientList[Series[Sech[Sinh[x]Sin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 4}]] (* Harvey P. Dale, Nov 12 2017 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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EXTENSIONS
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STATUS
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approved
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