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Search: id:A012790
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A012790 tanh(sec(x)*arcsin(x))=x+2/3!*x^3-20/5!*x^5-1104/7!*x^7-23728/9!*x^9... +0
1
1, 2, -20, -1104, -23728, 2048224, 394518592, 28921612032, -3968669081344, -2038929577444864, -347998546570798080, 59058720637105172480, 67936182152875665510400, 22515279368057454566531072 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A158843 A008793 A015192 this_sequence A013144 A112359 A053848

Adjacent sequences: A012787 A012788 A012789 this_sequence A012791 A012792 A012793

KEYWORD

sign

AUTHOR

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

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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