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A013194
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Expansion of e.g.f. log(sec(x) + sin(x)).
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0
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0, 1, 0, -2, 12, -40, 120, 208, -6048, 64640, -428160, 986368, 29812992, -652487680, 8332047360, -60911593472, -293043130368, 20973645824000, -456591699640320, 6185783347314688, -26996975653552128
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OFFSET
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0,4
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LINKS
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FORMULA
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E.g.f.: log(sec(x) + sin(x)).
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EXAMPLE
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x - 2/3!*x^3 + 12/4!*x^4 - 40/5!*x^5 + 120/6!*x^6 ...
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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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