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Search: id:A013406
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A013406 sech(arcsin(x)-tan(x))=1-10/6!*x^6-392/8!*x^8-11814/10!*x^10... +0
1
1, 0, 0, -10, -392, -11814, 496012, 255399014, 69358453968, 19258160456306, 6077931425640244, 2258231645186973342, 999755491596900217336, 527324363004530542073450, 328862882324660659119175452 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Adjacent sequences: A013403 A013404 A013405 this_sequence A013407 A013408 A013409

Sequence in context: A013405 A013404 A013402 this_sequence A098722 A041767 A130557

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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