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A009564 Expansion of tanh(x)*tan(sin(x))/2. +0
2
1, -60, 15120, -8648640, 8821612800, -14079294028800, 32382376266240000, -101421602465863680000, 415017197290314178560000, -2149789081963827444940800000 (list; graph; listen)
OFFSET

0,2

MATHEMATICA

Sin[ x^2 ]/2 (* [ x^(4n+2) ] *)

CROSSREFS

A024343.

Sequence in context: A003750 A001525 A113424 this_sequence A001460 A003794 A068295

Adjacent sequences: A009561 A009562 A009563 this_sequence A009565 A009566 A009567

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Extended with signs 03/97.

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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