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A009215 Expansion of exp(sin(x)/cosh(x)). 0
1, 1, 1, -3, -15, -3, 297, 1113, -6783, -77063, 70609, 5509845, 18558705, -430006731, -4027228359, 33282260529, 727421677185, -1454472663311, -134584692783455, -448480622503635, 26232888936219249, 254015086363619949 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

MATHEMATICA

Exp[ Sin[ x ]/Cosh[ x ] ]

CROSSREFS

Sequence in context: A048568 A119678 A096682 * A088558 A012881 A066832

Adjacent sequences:  A009212 A009213 A009214 * A009216 A009217 A009218

KEYWORD

sign,easy

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

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Last modified February 14 18:09 EST 2012. Contains 205663 sequences.