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A009442 Expansion of ln(1+x/cos(x)). +0
1
0, 1, -1, 5, -18, 109, -720, 5977, -56336, 612729, -7453440, 100954061, -1502172672, 24395453861, -429076910080, 8128143367905, -164961704478720, 3571195811862385, -82142328351817728, 2000535014776893973 (list; graph; listen)
OFFSET

0,4

MATHEMATICA

Log[ 1+x/Cos[ x ] ]

CROSSREFS

Sequence in context: A097574 A113023 A127756 this_sequence A036688 A009348 A009365

Adjacent sequences: A009439 A009440 A009441 this_sequence A009443 A009444 A009445

KEYWORD

sign,easy

AUTHOR

R. H. Hardin (rhh(AT)cadence.com)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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