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Search: id:A013528
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A013528 sech(cosec(x)-cotan(x))=1+2/8!*x^8+24/10!*x^10+148/12!*x^12... +0
1
1, 0, 0, 0, 2, 24, 148, -797, -56216, -1231179, -2073199, 1267787055, 60043234780, -695957262334 (list; graph; listen)
OFFSET

0,5
CROSSREFS

Sequence in context: A000185 A163752 A035600 this_sequence A108476 A157053 A052411

Adjacent sequences: A013525 A013526 A013527 this_sequence A013529 A013530 A013531

KEYWORD

sign

AUTHOR

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

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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