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Search: id:A012274
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A012274 sech(log(x+1)*log(x+1))=1-12/4!*x^4+120/5!*x^5-1020/6!*x^6... +0
1
1, 0, 0, 0, -12, 120, -1020, 8820, -72828, 505008, -1376160, -51546000, 1698674208, -38050144704, 739129595568, -12975913969200, 200099389809552, -2317325113329792, 740464178471424 (list; graph; listen)
OFFSET

0,5
CROSSREFS

Sequence in context: A061506 A059155 A012443 this_sequence A009035 A009140 A012273

Adjacent sequences: A012271 A012272 A012273 this_sequence A012275 A012276 A012277

KEYWORD

sign

AUTHOR

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

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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