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A024233 Expansion of tan(tanh(x))*sin(x)/2. 0
0, 1, -2, -21, 668, -8363, -597350, 76652415, -5349200200, 94006240681, 53961261562294, -13137846911653101, 1863043894828247636, -101535637135541768963, -32156707726436068717742 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
MATHEMATICA
Tan[ Tanh[ x ] ]*Sin[ x ]/2 (* Even Part *)
CROSSREFS
Cf. A009717.
Sequence in context: A060319 A095224 A034984 * A015209 A342267 A113083
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs Mar 1997
STATUS
approved

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Last modified July 22 00:08 EDT 2024. Contains 374478 sequences. (Running on oeis4.)