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Search: id:A012033
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A012033 sech(sin(sinh(x)))=1-1/2!*x^2+5/4!*x^4-13/6!*x^6-407/8!*x^8... +0
1
1, -1, 5, -13, -407, 30151, -1142483, 19202427, 3747342929, -722092683505, 76341208430549, -2313301317273981, -1769780901329435719, 628518840135423728599, -125498832189487922441219 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A067135 A122900 A145557 this_sequence A007540 A157250 A155185

Adjacent sequences: A012030 A012031 A012032 this_sequence A012034 A012035 A012036

KEYWORD

sign

AUTHOR

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

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

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