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Search: id:A012394
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A012394 sec(tan(x)*tan(x))=1+12/4!*x^4+480/6!*x^6+32592/8!*x^8... +0
2
1, 0, 12, 480, 32592, 3644160, 601225152, 136477985280, 40777726478592, 15519265846026240, 7330634507726810112, 4208431377781384765440, 2886028889205733569318912, 2330210584650322816604897280 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A012460 A012685 A012465 this_sequence A012686 A012466 A004801

Adjacent sequences: A012391 A012392 A012393 this_sequence A012395 A012396 A012397

KEYWORD

nonn

AUTHOR

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

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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