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Search: id:A012479
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A012479 sech(cos(x)*sin(x))=1-1/2!*x^2+21/4!*x^4-717/6!*x^6+46025/8!*x^8... +0
1
1, -1, 21, -717, 46025, -4817209, 734055069, -154121194437, 42674286160913, -15062120873888497, 6601538801733818277, -3517682024725193957181, 2239550167783452398617817, -1678950113256157460626211113 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A100713 A056565 A009167 this_sequence A078791 A143002 A062755

Adjacent sequences: A012476 A012477 A012478 this_sequence A012480 A012481 A012482

KEYWORD

sign

AUTHOR

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

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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